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Finding the Fourth Proportional to 836.55, 1,254.83 and 654.10

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Solution

The fourth proportional to 836.55, 1,254.83 and 654.10 is: 981.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.55 : 1,254.83 = 654.10 : x
  2. Step 2: Convert to fraction form
    836.55/1,254.83 = 654.10/x
  3. Step 3: Cross multiply
    836.55x = 1,254.83 × 654.10
  4. Step 4: Simplify right side
    836.55x = 820,777.90
  5. Step 5: Solve for x
    x = 820,777.90/836.55
  6. Step 6: Final answer
    x = 981.15

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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.