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Finding the Fourth Proportional to 531.30, 733.11 and 384.72

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Solution

The fourth proportional to 531.30, 733.11 and 384.72 is: 530.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.30 : 733.11 = 384.72 : x
  2. Step 2: Convert to fraction form
    531.30/733.11 = 384.72/x
  3. Step 3: Cross multiply
    531.30x = 733.11 × 384.72
  4. Step 4: Simplify right side
    531.30x = 282,042.08
  5. Step 5: Solve for x
    x = 282,042.08/531.30
  6. Step 6: Final answer
    x = 530.85

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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.