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Finding the Fourth Proportional to 249.96, 342.36 and 235.20

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Solution

The fourth proportional to 249.96, 342.36 and 235.20 is: 322.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.96 : 342.36 = 235.20 : x
  2. Step 2: Convert to fraction form
    249.96/342.36 = 235.20/x
  3. Step 3: Cross multiply
    249.96x = 342.36 × 235.20
  4. Step 4: Simplify right side
    249.96x = 80,523.07
  5. Step 5: Solve for x
    x = 80,523.07/249.96
  6. Step 6: Final answer
    x = 322.14

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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.