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Finding the Fourth Proportional to 558.43, 837.92 and 394.95

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Solution

The fourth proportional to 558.43, 837.92 and 394.95 is: 592.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    558.43 : 837.92 = 394.95 : x
  2. Step 2: Convert to fraction form
    558.43/837.92 = 394.95/x
  3. Step 3: Cross multiply
    558.43x = 837.92 × 394.95
  4. Step 4: Simplify right side
    558.43x = 330,941.87
  5. Step 5: Solve for x
    x = 330,941.87/558.43
  6. Step 6: Final answer
    x = 592.62

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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.