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Finding the Fourth Proportional to 176.54, 243.64 and 101.88

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Solution

The fourth proportional to 176.54, 243.64 and 101.88 is: 140.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    176.54 : 243.64 = 101.88 : x
  2. Step 2: Convert to fraction form
    176.54/243.64 = 101.88/x
  3. Step 3: Cross multiply
    176.54x = 243.64 × 101.88
  4. Step 4: Simplify right side
    176.54x = 24,822.04
  5. Step 5: Solve for x
    x = 24,822.04/176.54
  6. Step 6: Final answer
    x = 140.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.