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Finding the Fourth Proportional to 1,553.00, 2,330.17 and 731.21

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Solution

The fourth proportional to 1,553.00, 2,330.17 and 731.21 is: 1,097.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,553.00 : 2,330.17 = 731.21 : x
  2. Step 2: Convert to fraction form
    1,553.00/2,330.17 = 731.21/x
  3. Step 3: Cross multiply
    1,553.00x = 2,330.17 × 731.21
  4. Step 4: Simplify right side
    1,553.00x = 1,703,830.13
  5. Step 5: Solve for x
    x = 1,703,830.13/1,553.00
  6. Step 6: Final answer
    x = 1,097.13

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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.