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Finding the Fourth Proportional to 513.12, 766.85 and 375.24

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Solution

The fourth proportional to 513.12, 766.85 and 375.24 is: 560.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    513.12 : 766.85 = 375.24 : x
  2. Step 2: Convert to fraction form
    513.12/766.85 = 375.24/x
  3. Step 3: Cross multiply
    513.12x = 766.85 × 375.24
  4. Step 4: Simplify right side
    513.12x = 287,752.79
  5. Step 5: Solve for x
    x = 287,752.79/513.12
  6. Step 6: Final answer
    x = 560.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.