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Finding the Fourth Proportional to 613.75, 921.05 and 467.95

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Solution

The fourth proportional to 613.75, 921.05 and 467.95 is: 702.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    613.75 : 921.05 = 467.95 : x
  2. Step 2: Convert to fraction form
    613.75/921.05 = 467.95/x
  3. Step 3: Cross multiply
    613.75x = 921.05 × 467.95
  4. Step 4: Simplify right side
    613.75x = 431,003.01
  5. Step 5: Solve for x
    x = 431,003.01/613.75
  6. Step 6: Final answer
    x = 702.25

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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.