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Finding the Fourth Proportional to 426.41, 588.29 and 251.72

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Solution

The fourth proportional to 426.41, 588.29 and 251.72 is: 347.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.41 : 588.29 = 251.72 : x
  2. Step 2: Convert to fraction form
    426.41/588.29 = 251.72/x
  3. Step 3: Cross multiply
    426.41x = 588.29 × 251.72
  4. Step 4: Simplify right side
    426.41x = 148,080.16
  5. Step 5: Solve for x
    x = 148,080.16/426.41
  6. Step 6: Final answer
    x = 347.28

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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.