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Finding the Fourth Proportional to 395.42, 592.43 and 380.43

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Solution

The fourth proportional to 395.42, 592.43 and 380.43 is: 569.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    395.42 : 592.43 = 380.43 : x
  2. Step 2: Convert to fraction form
    395.42/592.43 = 380.43/x
  3. Step 3: Cross multiply
    395.42x = 592.43 × 380.43
  4. Step 4: Simplify right side
    395.42x = 225,376.24
  5. Step 5: Solve for x
    x = 225,376.24/395.42
  6. Step 6: Final answer
    x = 569.97

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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.