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Finding the Fourth Proportional to 175.76, 243.12 and 148.56

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Solution

The fourth proportional to 175.76, 243.12 and 148.56 is: 205.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    175.76 : 243.12 = 148.56 : x
  2. Step 2: Convert to fraction form
    175.76/243.12 = 148.56/x
  3. Step 3: Cross multiply
    175.76x = 243.12 × 148.56
  4. Step 4: Simplify right side
    175.76x = 36,117.91
  5. Step 5: Solve for x
    x = 36,117.91/175.76
  6. Step 6: Final answer
    x = 205.50

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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.