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Finding the Fourth Proportional to 285.64, 426.08 and 251.44

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Solution

The fourth proportional to 285.64, 426.08 and 251.44 is: 375.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.64 : 426.08 = 251.44 : x
  2. Step 2: Convert to fraction form
    285.64/426.08 = 251.44/x
  3. Step 3: Cross multiply
    285.64x = 426.08 × 251.44
  4. Step 4: Simplify right side
    285.64x = 107,133.56
  5. Step 5: Solve for x
    x = 107,133.56/285.64
  6. Step 6: Final answer
    x = 375.06

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.