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Finding the Fourth Proportional to 425.68, 587.20 and 292.88

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Solution

The fourth proportional to 425.68, 587.20 and 292.88 is: 404.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.68 : 587.20 = 292.88 : x
  2. Step 2: Convert to fraction form
    425.68/587.20 = 292.88/x
  3. Step 3: Cross multiply
    425.68x = 587.20 × 292.88
  4. Step 4: Simplify right side
    425.68x = 171,979.87
  5. Step 5: Solve for x
    x = 171,979.87/425.68
  6. Step 6: Final answer
    x = 404.01

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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.