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Finding the Fourth Proportional to 426.01, 587.78 and 251.35

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Solution

The fourth proportional to 426.01, 587.78 and 251.35 is: 346.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.01 : 587.78 = 251.35 : x
  2. Step 2: Convert to fraction form
    426.01/587.78 = 251.35/x
  3. Step 3: Cross multiply
    426.01x = 587.78 × 251.35
  4. Step 4: Simplify right side
    426.01x = 147,737.25
  5. Step 5: Solve for x
    x = 147,737.25/426.01
  6. Step 6: Final answer
    x = 346.79

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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.