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Finding the Fourth Proportional to 836.52, 1,154.38 and 521.62

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Solution

The fourth proportional to 836.52, 1,154.38 and 521.62 is: 719.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.52 : 1,154.38 = 521.62 : x
  2. Step 2: Convert to fraction form
    836.52/1,154.38 = 521.62/x
  3. Step 3: Cross multiply
    836.52x = 1,154.38 × 521.62
  4. Step 4: Simplify right side
    836.52x = 602,147.70
  5. Step 5: Solve for x
    x = 602,147.70/836.52
  6. Step 6: Final answer
    x = 719.82

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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.