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Finding the Fourth Proportional to 714.32, 984.15 and 635.65

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Solution

The fourth proportional to 714.32, 984.15 and 635.65 is: 875.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    714.32 : 984.15 = 635.65 : x
  2. Step 2: Convert to fraction form
    714.32/984.15 = 635.65/x
  3. Step 3: Cross multiply
    714.32x = 984.15 × 635.65
  4. Step 4: Simplify right side
    714.32x = 625,572.49
  5. Step 5: Solve for x
    x = 625,572.49/714.32
  6. Step 6: Final answer
    x = 875.76

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Double scale
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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.