Home / 1,205.24-1,663.19-674.10

Finding the Fourth Proportional to 1,205.24, 1,663.19 and 674.10

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Solution

The fourth proportional to 1,205.24, 1,663.19 and 674.10 is: 930.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205.24 : 1,663.19 = 674.10 : x
  2. Step 2: Convert to fraction form
    1,205.24/1,663.19 = 674.10/x
  3. Step 3: Cross multiply
    1,205.24x = 1,663.19 × 674.10
  4. Step 4: Simplify right side
    1,205.24x = 1,121,156.38
  5. Step 5: Solve for x
    x = 1,121,156.38/1,205.24
  6. Step 6: Final answer
    x = 930.23

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.