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Finding the Fourth Proportional to 531.48, 733.26 and 345.20

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Solution

The fourth proportional to 531.48, 733.26 and 345.20 is: 476.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.48 : 733.26 = 345.20 : x
  2. Step 2: Convert to fraction form
    531.48/733.26 = 345.20/x
  3. Step 3: Cross multiply
    531.48x = 733.26 × 345.20
  4. Step 4: Simplify right side
    531.48x = 253,123.19
  5. Step 5: Solve for x
    x = 253,123.19/531.48
  6. Step 6: Final answer
    x = 476.26

Related Problems

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Double scale
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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.