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Finding the Fourth Proportional to 531.12, 794.10 and 518.16

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Solution

The fourth proportional to 531.12, 794.10 and 518.16 is: 774.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.12 : 794.10 = 518.16 : x
  2. Step 2: Convert to fraction form
    531.12/794.10 = 518.16/x
  3. Step 3: Cross multiply
    531.12x = 794.10 × 518.16
  4. Step 4: Simplify right side
    531.12x = 411,470.86
  5. Step 5: Solve for x
    x = 411,470.86/531.12
  6. Step 6: Final answer
    x = 774.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.