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Finding the Fourth Proportional to 400.68, 597.67 and 394.61

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Solution

The fourth proportional to 400.68, 597.67 and 394.61 is: 588.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.68 : 597.67 = 394.61 : x
  2. Step 2: Convert to fraction form
    400.68/597.67 = 394.61/x
  3. Step 3: Cross multiply
    400.68x = 597.67 × 394.61
  4. Step 4: Simplify right side
    400.68x = 235,842.58
  5. Step 5: Solve for x
    x = 235,842.58/400.68
  6. Step 6: Final answer
    x = 588.61

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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.