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Finding the Fourth Proportional to 316.75, 437.12 and 176.86

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Solution

The fourth proportional to 316.75, 437.12 and 176.86 is: 244.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.75 : 437.12 = 176.86 : x
  2. Step 2: Convert to fraction form
    316.75/437.12 = 176.86/x
  3. Step 3: Cross multiply
    316.75x = 437.12 × 176.86
  4. Step 4: Simplify right side
    316.75x = 77,309.04
  5. Step 5: Solve for x
    x = 77,309.04/316.75
  6. Step 6: Final answer
    x = 244.07

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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.