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Finding the Fourth Proportional to 400.62, 553.37 and 295.86

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Solution

The fourth proportional to 400.62, 553.37 and 295.86 is: 408.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.62 : 553.37 = 295.86 : x
  2. Step 2: Convert to fraction form
    400.62/553.37 = 295.86/x
  3. Step 3: Cross multiply
    400.62x = 553.37 × 295.86
  4. Step 4: Simplify right side
    400.62x = 163,718.57
  5. Step 5: Solve for x
    x = 163,718.57/400.62
  6. Step 6: Final answer
    x = 408.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.