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Finding the Fourth Proportional to 247.80, 341.50 and 177.74

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Solution

The fourth proportional to 247.80, 341.50 and 177.74 is: 244.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.80 : 341.50 = 177.74 : x
  2. Step 2: Convert to fraction form
    247.80/341.50 = 177.74/x
  3. Step 3: Cross multiply
    247.80x = 341.50 × 177.74
  4. Step 4: Simplify right side
    247.80x = 60,698.21
  5. Step 5: Solve for x
    x = 60,698.21/247.80
  6. Step 6: Final answer
    x = 244.95

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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.