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Finding the Fourth Proportional to 551.10, 826.62 and 140.24

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Solution

The fourth proportional to 551.10, 826.62 and 140.24 is: 210.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.10 : 826.62 = 140.24 : x
  2. Step 2: Convert to fraction form
    551.10/826.62 = 140.24/x
  3. Step 3: Cross multiply
    551.10x = 826.62 × 140.24
  4. Step 4: Simplify right side
    551.10x = 115,926.73
  5. Step 5: Solve for x
    x = 115,926.73/551.10
  6. Step 6: Final answer
    x = 210.35

Related Problems

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Double scale
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Similar ratio
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1.5x scale

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.