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Finding the Fourth Proportional to 765.84, 1,147.95 and 375.27

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Solution

The fourth proportional to 765.84, 1,147.95 and 375.27 is: 562.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    765.84 : 1,147.95 = 375.27 : x
  2. Step 2: Convert to fraction form
    765.84/1,147.95 = 375.27/x
  3. Step 3: Cross multiply
    765.84x = 1,147.95 × 375.27
  4. Step 4: Simplify right side
    765.84x = 430,791.20
  5. Step 5: Solve for x
    x = 430,791.20/765.84
  6. Step 6: Final answer
    x = 562.51

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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.