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Finding the Fourth Proportional to 316.76, 437.24 and 227.15

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Solution

The fourth proportional to 316.76, 437.24 and 227.15 is: 313.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    316.76 : 437.24 = 227.15 : x
  2. Step 2: Convert to fraction form
    316.76/437.24 = 227.15/x
  3. Step 3: Cross multiply
    316.76x = 437.24 × 227.15
  4. Step 4: Simplify right side
    316.76x = 99,315.74
  5. Step 5: Solve for x
    x = 99,315.74/316.76
  6. Step 6: Final answer
    x = 313.54

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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.