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Finding the Fourth Proportional to 410.34, 615.43 and 136.35

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Solution

The fourth proportional to 410.34, 615.43 and 136.35 is: 204.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    410.34 : 615.43 = 136.35 : x
  2. Step 2: Convert to fraction form
    410.34/615.43 = 136.35/x
  3. Step 3: Cross multiply
    410.34x = 615.43 × 136.35
  4. Step 4: Simplify right side
    410.34x = 83,913.54
  5. Step 5: Solve for x
    x = 83,913.54/410.34
  6. Step 6: Final answer
    x = 204.50

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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.