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Finding the Fourth Proportional to 244.34, 337.20 and 139.40

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Solution

The fourth proportional to 244.34, 337.20 and 139.40 is: 192.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    244.34 : 337.20 = 139.40 : x
  2. Step 2: Convert to fraction form
    244.34/337.20 = 139.40/x
  3. Step 3: Cross multiply
    244.34x = 337.20 × 139.40
  4. Step 4: Simplify right side
    244.34x = 47,005.68
  5. Step 5: Solve for x
    x = 47,005.68/244.34
  6. Step 6: Final answer
    x = 192.38

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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.