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Finding the Fourth Proportional to 410.55, 615.83 and 136.64

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Solution

The fourth proportional to 410.55, 615.83 and 136.64 is: 204.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.55 : 615.83 = 136.64 : x
  2. Step 2: Convert to fraction form
    410.55/615.83 = 136.64/x
  3. Step 3: Cross multiply
    410.55x = 615.83 × 136.64
  4. Step 4: Simplify right side
    410.55x = 84,147.58
  5. Step 5: Solve for x
    x = 84,147.58/410.55
  6. Step 6: Final answer
    x = 204.96

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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.