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Finding the Fourth Proportional to 373.92, 558.57 and 287.22

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Solution

The fourth proportional to 373.92, 558.57 and 287.22 is: 429.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    373.92 : 558.57 = 287.22 : x
  2. Step 2: Convert to fraction form
    373.92/558.57 = 287.22/x
  3. Step 3: Cross multiply
    373.92x = 558.57 × 287.22
  4. Step 4: Simplify right side
    373.92x = 160,432.48
  5. Step 5: Solve for x
    x = 160,432.48/373.92
  6. Step 6: Final answer
    x = 429.06

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.