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Finding the Fourth Proportional to 318.04, 439.26 and 244.20

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Solution

The fourth proportional to 318.04, 439.26 and 244.20 is: 337.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    318.04 : 439.26 = 244.20 : x
  2. Step 2: Convert to fraction form
    318.04/439.26 = 244.20/x
  3. Step 3: Cross multiply
    318.04x = 439.26 × 244.20
  4. Step 4: Simplify right side
    318.04x = 107,267.29
  5. Step 5: Solve for x
    x = 107,267.29/318.04
  6. Step 6: Final answer
    x = 337.28

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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.