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Finding the Fourth Proportional to 701.18, 965.42 and 636.38

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Solution

The fourth proportional to 701.18, 965.42 and 636.38 is: 876.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    701.18 : 965.42 = 636.38 : x
  2. Step 2: Convert to fraction form
    701.18/965.42 = 636.38/x
  3. Step 3: Cross multiply
    701.18x = 965.42 × 636.38
  4. Step 4: Simplify right side
    701.18x = 614,373.98
  5. Step 5: Solve for x
    x = 614,373.98/701.18
  6. Step 6: Final answer
    x = 876.20

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1.5x scale

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.