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Finding the Fourth Proportional to 425.42, 587.15 and 250.80

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Solution

The fourth proportional to 425.42, 587.15 and 250.80 is: 346.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.42 : 587.15 = 250.80 : x
  2. Step 2: Convert to fraction form
    425.42/587.15 = 250.80/x
  3. Step 3: Cross multiply
    425.42x = 587.15 × 250.80
  4. Step 4: Simplify right side
    425.42x = 147,256.38
  5. Step 5: Solve for x
    x = 147,256.38/425.42
  6. Step 6: Final answer
    x = 346.14

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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.