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Finding the Fourth Proportional to 161.46, 243.15 and 135.95

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Solution

The fourth proportional to 161.46, 243.15 and 135.95 is: 204.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.46 : 243.15 = 135.95 : x
  2. Step 2: Convert to fraction form
    161.46/243.15 = 135.95/x
  3. Step 3: Cross multiply
    161.46x = 243.15 × 135.95
  4. Step 4: Simplify right side
    161.46x = 33,054.52
  5. Step 5: Solve for x
    x = 33,054.52/161.46
  6. Step 6: Final answer
    x = 204.72

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.