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Finding the Fourth Proportional to 317.67, 439.20 and 244.23

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Solution

The fourth proportional to 317.67, 439.20 and 244.23 is: 337.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.67 : 439.20 = 244.23 : x
  2. Step 2: Convert to fraction form
    317.67/439.20 = 244.23/x
  3. Step 3: Cross multiply
    317.67x = 439.20 × 244.23
  4. Step 4: Simplify right side
    317.67x = 107,265.82
  5. Step 5: Solve for x
    x = 107,265.82/317.67
  6. Step 6: Final answer
    x = 337.66

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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.