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Finding the Fourth Proportional to 397.91, 600.60 and 397.91

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Solution

The fourth proportional to 397.91, 600.60 and 397.91 is: 600.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.91 : 600.60 = 397.91 : x
  2. Step 2: Convert to fraction form
    397.91/600.60 = 397.91/x
  3. Step 3: Cross multiply
    397.91x = 600.60 × 397.91
  4. Step 4: Simplify right side
    397.91x = 238,981.74
  5. Step 5: Solve for x
    x = 238,981.74/397.91
  6. Step 6: Final answer
    x = 600.60

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.