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Finding the Fourth Proportional to 1,652.99, 2,479.49 and 679.10

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Solution

The fourth proportional to 1,652.99, 2,479.49 and 679.10 is: 1,018.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,652.99 : 2,479.49 = 679.10 : x
  2. Step 2: Convert to fraction form
    1,652.99/2,479.49 = 679.10/x
  3. Step 3: Cross multiply
    1,652.99x = 2,479.49 × 679.10
  4. Step 4: Simplify right side
    1,652.99x = 1,683,821.66
  5. Step 5: Solve for x
    x = 1,683,821.66/1,652.99
  6. Step 6: Final answer
    x = 1,018.65

Related Problems

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Half scale
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Double scale
Find fourth proportional to 1,653.99, 2,480.99 and 680.10
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.