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Finding the Fourth Proportional to 314.38, 470.76 and 262.74

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Solution

The fourth proportional to 314.38, 470.76 and 262.74 is: 393.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.38 : 470.76 = 262.74 : x
  2. Step 2: Convert to fraction form
    314.38/470.76 = 262.74/x
  3. Step 3: Cross multiply
    314.38x = 470.76 × 262.74
  4. Step 4: Simplify right side
    314.38x = 123,687.48
  5. Step 5: Solve for x
    x = 123,687.48/314.38
  6. Step 6: Final answer
    x = 393.43

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.