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Finding the Fourth Proportional to 249.35, 374.06 and 87.08

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Solution

The fourth proportional to 249.35, 374.06 and 87.08 is: 130.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    249.35 : 374.06 = 87.08 : x
  2. Step 2: Convert to fraction form
    249.35/374.06 = 87.08/x
  3. Step 3: Cross multiply
    249.35x = 374.06 × 87.08
  4. Step 4: Simplify right side
    249.35x = 32,574.30
  5. Step 5: Solve for x
    x = 32,574.30/249.35
  6. Step 6: Final answer
    x = 130.64

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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.