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Finding the Fourth Proportional to 617.31, 926.24 and 480.15

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Solution

The fourth proportional to 617.31, 926.24 and 480.15 is: 720.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.31 : 926.24 = 480.15 : x
  2. Step 2: Convert to fraction form
    617.31/926.24 = 480.15/x
  3. Step 3: Cross multiply
    617.31x = 926.24 × 480.15
  4. Step 4: Simplify right side
    617.31x = 444,731.74
  5. Step 5: Solve for x
    x = 444,731.74/617.31
  6. Step 6: Final answer
    x = 720.44

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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.