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Finding the Fourth Proportional to 531.66, 732.57 and 383.82

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Solution

The fourth proportional to 531.66, 732.57 and 383.82 is: 528.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.66 : 732.57 = 383.82 : x
  2. Step 2: Convert to fraction form
    531.66/732.57 = 383.82/x
  3. Step 3: Cross multiply
    531.66x = 732.57 × 383.82
  4. Step 4: Simplify right side
    531.66x = 281,175.02
  5. Step 5: Solve for x
    x = 281,175.02/531.66
  6. Step 6: Final answer
    x = 528.86

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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.