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Finding the Fourth Proportional to 591.04, 886.92 and 385.61

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Solution

The fourth proportional to 591.04, 886.92 and 385.61 is: 578.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    591.04 : 886.92 = 385.61 : x
  2. Step 2: Convert to fraction form
    591.04/886.92 = 385.61/x
  3. Step 3: Cross multiply
    591.04x = 886.92 × 385.61
  4. Step 4: Simplify right side
    591.04x = 341,998.86
  5. Step 5: Solve for x
    x = 341,998.86/591.04
  6. Step 6: Final answer
    x = 578.64

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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.