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Finding the Fourth Proportional to 461.74, 693.51 and 396.72

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Solution

The fourth proportional to 461.74, 693.51 and 396.72 is: 595.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.74 : 693.51 = 396.72 : x
  2. Step 2: Convert to fraction form
    461.74/693.51 = 396.72/x
  3. Step 3: Cross multiply
    461.74x = 693.51 × 396.72
  4. Step 4: Simplify right side
    461.74x = 275,129.29
  5. Step 5: Solve for x
    x = 275,129.29/461.74
  6. Step 6: Final answer
    x = 595.85

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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.