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Finding the Fourth Proportional to 1,553.13, 2,329.69 and 457.47

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Solution

The fourth proportional to 1,553.13, 2,329.69 and 457.47 is: 686.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.13 : 2,329.69 = 457.47 : x
  2. Step 2: Convert to fraction form
    1,553.13/2,329.69 = 457.47/x
  3. Step 3: Cross multiply
    1,553.13x = 2,329.69 × 457.47
  4. Step 4: Simplify right side
    1,553.13x = 1,065,763.28
  5. Step 5: Solve for x
    x = 1,065,763.28/1,553.13
  6. Step 6: Final answer
    x = 686.20

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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.