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Finding the Fourth Proportional to 688.47, 950.27 and 426.33

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Solution

The fourth proportional to 688.47, 950.27 and 426.33 is: 588.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    688.47 : 950.27 = 426.33 : x
  2. Step 2: Convert to fraction form
    688.47/950.27 = 426.33/x
  3. Step 3: Cross multiply
    688.47x = 950.27 × 426.33
  4. Step 4: Simplify right side
    688.47x = 405,128.61
  5. Step 5: Solve for x
    x = 405,128.61/688.47
  6. Step 6: Final answer
    x = 588.45

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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.