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Finding the Fourth Proportional to 400.71, 601.03 and 140.65

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Solution

The fourth proportional to 400.71, 601.03 and 140.65 is: 210.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.71 : 601.03 = 140.65 : x
  2. Step 2: Convert to fraction form
    400.71/601.03 = 140.65/x
  3. Step 3: Cross multiply
    400.71x = 601.03 × 140.65
  4. Step 4: Simplify right side
    400.71x = 84,534.87
  5. Step 5: Solve for x
    x = 84,534.87/400.71
  6. Step 6: Final answer
    x = 210.96

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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.