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Finding the Fourth Proportional to 250.91, 345.42 and 185.30

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Solution

The fourth proportional to 250.91, 345.42 and 185.30 is: 255.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.91 : 345.42 = 185.30 : x
  2. Step 2: Convert to fraction form
    250.91/345.42 = 185.30/x
  3. Step 3: Cross multiply
    250.91x = 345.42 × 185.30
  4. Step 4: Simplify right side
    250.91x = 64,006.33
  5. Step 5: Solve for x
    x = 64,006.33/250.91
  6. Step 6: Final answer
    x = 255.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.