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Finding the Fourth Proportional to 531.20, 733.08 and 310.16

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Solution

The fourth proportional to 531.20, 733.08 and 310.16 is: 428.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.20 : 733.08 = 310.16 : x
  2. Step 2: Convert to fraction form
    531.20/733.08 = 310.16/x
  3. Step 3: Cross multiply
    531.20x = 733.08 × 310.16
  4. Step 4: Simplify right side
    531.20x = 227,372.09
  5. Step 5: Solve for x
    x = 227,372.09/531.20
  6. Step 6: Final answer
    x = 428.03

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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.