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Finding the Fourth Proportional to 393.29, 592.90 and 366.87

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Solution

The fourth proportional to 393.29, 592.90 and 366.87 is: 553.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    393.29 : 592.90 = 366.87 : x
  2. Step 2: Convert to fraction form
    393.29/592.90 = 366.87/x
  3. Step 3: Cross multiply
    393.29x = 592.90 × 366.87
  4. Step 4: Simplify right side
    393.29x = 217,517.22
  5. Step 5: Solve for x
    x = 217,517.22/393.29
  6. Step 6: Final answer
    x = 553.07

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.