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Finding the Fourth Proportional to 588.96, 812.64 and 399.97

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Solution

The fourth proportional to 588.96, 812.64 and 399.97 is: 551.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    588.96 : 812.64 = 399.97 : x
  2. Step 2: Convert to fraction form
    588.96/812.64 = 399.97/x
  3. Step 3: Cross multiply
    588.96x = 812.64 × 399.97
  4. Step 4: Simplify right side
    588.96x = 325,031.62
  5. Step 5: Solve for x
    x = 325,031.62/588.96
  6. Step 6: Final answer
    x = 551.87

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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.