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Finding the Fourth Proportional to 617.02, 925.63 and 251.78

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Solution

The fourth proportional to 617.02, 925.63 and 251.78 is: 377.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.02 : 925.63 = 251.78 : x
  2. Step 2: Convert to fraction form
    617.02/925.63 = 251.78/x
  3. Step 3: Cross multiply
    617.02x = 925.63 × 251.78
  4. Step 4: Simplify right side
    617.02x = 233,049.86
  5. Step 5: Solve for x
    x = 233,049.86/617.02
  6. Step 6: Final answer
    x = 377.70

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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.