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Finding the Fourth Proportional to 250.19, 375.28 and 87.87

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Solution

The fourth proportional to 250.19, 375.28 and 87.87 is: 131.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.19 : 375.28 = 87.87 : x
  2. Step 2: Convert to fraction form
    250.19/375.28 = 87.87/x
  3. Step 3: Cross multiply
    250.19x = 375.28 × 87.87
  4. Step 4: Simplify right side
    250.19x = 32,975.85
  5. Step 5: Solve for x
    x = 32,975.85/250.19
  6. Step 6: Final answer
    x = 131.80

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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.