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Finding the Fourth Proportional to 531.30, 733.28 and 310.38

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Solution

The fourth proportional to 531.30, 733.28 and 310.38 is: 428.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.30 : 733.28 = 310.38 : x
  2. Step 2: Convert to fraction form
    531.30/733.28 = 310.38/x
  3. Step 3: Cross multiply
    531.30x = 733.28 × 310.38
  4. Step 4: Simplify right side
    531.30x = 227,593.89
  5. Step 5: Solve for x
    x = 227,593.89/531.30
  6. Step 6: Final answer
    x = 428.37

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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.