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Finding the Fourth Proportional to 314.27, 470.91 and 281.59

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Solution

The fourth proportional to 314.27, 470.91 and 281.59 is: 421.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    314.27 : 470.91 = 281.59 : x
  2. Step 2: Convert to fraction form
    314.27/470.91 = 281.59/x
  3. Step 3: Cross multiply
    314.27x = 470.91 × 281.59
  4. Step 4: Simplify right side
    314.27x = 132,603.43
  5. Step 5: Solve for x
    x = 132,603.43/314.27
  6. Step 6: Final answer
    x = 421.94

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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.