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Finding the Fourth Proportional to 1,966.23, 2,949.35 and 990.99

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Solution

The fourth proportional to 1,966.23, 2,949.35 and 990.99 is: 1,486.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.23 : 2,949.35 = 990.99 : x
  2. Step 2: Convert to fraction form
    1,966.23/2,949.35 = 990.99/x
  3. Step 3: Cross multiply
    1,966.23x = 2,949.35 × 990.99
  4. Step 4: Simplify right side
    1,966.23x = 2,922,771.40
  5. Step 5: Solve for x
    x = 2,922,771.40/1,966.23
  6. Step 6: Final answer
    x = 1,486.49

Related Problems

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Half scale
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Double scale
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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.