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Finding the Fourth Proportional to 891.43, 1,337.15 and 585.22

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Solution

The fourth proportional to 891.43, 1,337.15 and 585.22 is: 877.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    891.43 : 1,337.15 = 585.22 : x
  2. Step 2: Convert to fraction form
    891.43/1,337.15 = 585.22/x
  3. Step 3: Cross multiply
    891.43x = 1,337.15 × 585.22
  4. Step 4: Simplify right side
    891.43x = 782,526.92
  5. Step 5: Solve for x
    x = 782,526.92/891.43
  6. Step 6: Final answer
    x = 877.83

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Double scale
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Similar ratio
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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.