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Finding the Fourth Proportional to 617.19, 925.79 and 514.55

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Solution

The fourth proportional to 617.19, 925.79 and 514.55 is: 771.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.19 : 925.79 = 514.55 : x
  2. Step 2: Convert to fraction form
    617.19/925.79 = 514.55/x
  3. Step 3: Cross multiply
    617.19x = 925.79 × 514.55
  4. Step 4: Simplify right side
    617.19x = 476,358.04
  5. Step 5: Solve for x
    x = 476,358.04/617.19
  6. Step 6: Final answer
    x = 771.82

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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.