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Finding the Fourth Proportional to 410.10, 615.19 and 136.21

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Solution

The fourth proportional to 410.10, 615.19 and 136.21 is: 204.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.10 : 615.19 = 136.21 : x
  2. Step 2: Convert to fraction form
    410.10/615.19 = 136.21/x
  3. Step 3: Cross multiply
    410.10x = 615.19 × 136.21
  4. Step 4: Simplify right side
    410.10x = 83,795.03
  5. Step 5: Solve for x
    x = 83,795.03/410.10
  6. Step 6: Final answer
    x = 204.33

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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.