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Finding the Fourth Proportional to 162.61, 243.51 and 101.55

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Solution

The fourth proportional to 162.61, 243.51 and 101.55 is: 152.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.61 : 243.51 = 101.55 : x
  2. Step 2: Convert to fraction form
    162.61/243.51 = 101.55/x
  3. Step 3: Cross multiply
    162.61x = 243.51 × 101.55
  4. Step 4: Simplify right side
    162.61x = 24,728.97
  5. Step 5: Solve for x
    x = 24,728.97/162.61
  6. Step 6: Final answer
    x = 152.08

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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.