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Finding the Fourth Proportional to 462.06, 693.36 and 391.86

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Solution

The fourth proportional to 462.06, 693.36 and 391.86 is: 588.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.06 : 693.36 = 391.86 : x
  2. Step 2: Convert to fraction form
    462.06/693.36 = 391.86/x
  3. Step 3: Cross multiply
    462.06x = 693.36 × 391.86
  4. Step 4: Simplify right side
    462.06x = 271,700.05
  5. Step 5: Solve for x
    x = 271,700.05/462.06
  6. Step 6: Final answer
    x = 588.02

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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.