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Finding the Fourth Proportional to 531.58, 733.63 and 321.81

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Solution

The fourth proportional to 531.58, 733.63 and 321.81 is: 444.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.58 : 733.63 = 321.81 : x
  2. Step 2: Convert to fraction form
    531.58/733.63 = 321.81/x
  3. Step 3: Cross multiply
    531.58x = 733.63 × 321.81
  4. Step 4: Simplify right side
    531.58x = 236,085.80
  5. Step 5: Solve for x
    x = 236,085.80/531.58
  6. Step 6: Final answer
    x = 444.12

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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.