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Finding the Fourth Proportional to 588.62, 812.66 and 378.87

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Solution

The fourth proportional to 588.62, 812.66 and 378.87 is: 523.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    588.62 : 812.66 = 378.87 : x
  2. Step 2: Convert to fraction form
    588.62/812.66 = 378.87/x
  3. Step 3: Cross multiply
    588.62x = 812.66 × 378.87
  4. Step 4: Simplify right side
    588.62x = 307,890.60
  5. Step 5: Solve for x
    x = 307,890.60/588.62
  6. Step 6: Final answer
    x = 523.08

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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.