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Finding the Fourth Proportional to 249.44, 374.06 and 87.08

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Solution

The fourth proportional to 249.44, 374.06 and 87.08 is: 130.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.44 : 374.06 = 87.08 : x
  2. Step 2: Convert to fraction form
    249.44/374.06 = 87.08/x
  3. Step 3: Cross multiply
    249.44x = 374.06 × 87.08
  4. Step 4: Simplify right side
    249.44x = 32,573.14
  5. Step 5: Solve for x
    x = 32,573.14/249.44
  6. Step 6: Final answer
    x = 130.59

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.