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Finding the Fourth Proportional to 932.25, 1,285.15 and 616.98

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Solution

The fourth proportional to 932.25, 1,285.15 and 616.98 is: 850.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    932.25 : 1,285.15 = 616.98 : x
  2. Step 2: Convert to fraction form
    932.25/1,285.15 = 616.98/x
  3. Step 3: Cross multiply
    932.25x = 1,285.15 × 616.98
  4. Step 4: Simplify right side
    932.25x = 792,916.60
  5. Step 5: Solve for x
    x = 792,916.60/932.25
  6. Step 6: Final answer
    x = 850.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.