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Finding the Fourth Proportional to 591.72, 816.65 and 426.48

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Solution

The fourth proportional to 591.72, 816.65 and 426.48 is: 588.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.72 : 816.65 = 426.48 : x
  2. Step 2: Convert to fraction form
    591.72/816.65 = 426.48/x
  3. Step 3: Cross multiply
    591.72x = 816.65 × 426.48
  4. Step 4: Simplify right side
    591.72x = 348,278.68
  5. Step 5: Solve for x
    x = 348,278.68/591.72
  6. Step 6: Final answer
    x = 588.59

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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.