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Finding the Fourth Proportional to 178.86, 247.04 and 177.48

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Solution

The fourth proportional to 178.86, 247.04 and 177.48 is: 245.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    178.86 : 247.04 = 177.48 : x
  2. Step 2: Convert to fraction form
    178.86/247.04 = 177.48/x
  3. Step 3: Cross multiply
    178.86x = 247.04 × 177.48
  4. Step 4: Simplify right side
    178.86x = 43,843.77
  5. Step 5: Solve for x
    x = 43,843.77/178.86
  6. Step 6: Final answer
    x = 245.13

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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.