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Finding the Fourth Proportional to 249.32, 342.18 and 239.29

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Solution

The fourth proportional to 249.32, 342.18 and 239.29 is: 328.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.32 : 342.18 = 239.29 : x
  2. Step 2: Convert to fraction form
    249.32/342.18 = 239.29/x
  3. Step 3: Cross multiply
    249.32x = 342.18 × 239.29
  4. Step 4: Simplify right side
    249.32x = 81,880.25
  5. Step 5: Solve for x
    x = 81,880.25/249.32
  6. Step 6: Final answer
    x = 328.41

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.