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Finding the Fourth Proportional to 617.88, 925.60 and 514.83

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Solution

The fourth proportional to 617.88, 925.60 and 514.83 is: 771.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.88 : 925.60 = 514.83 : x
  2. Step 2: Convert to fraction form
    617.88/925.60 = 514.83/x
  3. Step 3: Cross multiply
    617.88x = 925.60 × 514.83
  4. Step 4: Simplify right side
    617.88x = 476,526.65
  5. Step 5: Solve for x
    x = 476,526.65/617.88
  6. Step 6: Final answer
    x = 771.23

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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.