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Finding the Fourth Proportional to 531.34, 733.39 and 321.53

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Solution

The fourth proportional to 531.34, 733.39 and 321.53 is: 443.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.34 : 733.39 = 321.53 : x
  2. Step 2: Convert to fraction form
    531.34/733.39 = 321.53/x
  3. Step 3: Cross multiply
    531.34x = 733.39 × 321.53
  4. Step 4: Simplify right side
    531.34x = 235,802.42
  5. Step 5: Solve for x
    x = 235,802.42/531.34
  6. Step 6: Final answer
    x = 443.79

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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.