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Finding the Fourth Proportional to 250.52, 375.82 and 85.98

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Solution

The fourth proportional to 250.52, 375.82 and 85.98 is: 128.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.52 : 375.82 = 85.98 : x
  2. Step 2: Convert to fraction form
    250.52/375.82 = 85.98/x
  3. Step 3: Cross multiply
    250.52x = 375.82 × 85.98
  4. Step 4: Simplify right side
    250.52x = 32,313.00
  5. Step 5: Solve for x
    x = 32,313.00/250.52
  6. Step 6: Final answer
    x = 128.98

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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.