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Finding the Fourth Proportional to 394.59, 592.70 and 381.63

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Solution

The fourth proportional to 394.59, 592.70 and 381.63 is: 573.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.59 : 592.70 = 381.63 : x
  2. Step 2: Convert to fraction form
    394.59/592.70 = 381.63/x
  3. Step 3: Cross multiply
    394.59x = 592.70 × 381.63
  4. Step 4: Simplify right side
    394.59x = 226,192.10
  5. Step 5: Solve for x
    x = 226,192.10/394.59
  6. Step 6: Final answer
    x = 573.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.