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Finding the Fourth Proportional to 400.25, 551.87 and 293.87

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Solution

The fourth proportional to 400.25, 551.87 and 293.87 is: 405.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.25 : 551.87 = 293.87 : x
  2. Step 2: Convert to fraction form
    400.25/551.87 = 293.87/x
  3. Step 3: Cross multiply
    400.25x = 551.87 × 293.87
  4. Step 4: Simplify right side
    400.25x = 162,178.04
  5. Step 5: Solve for x
    x = 162,178.04/400.25
  6. Step 6: Final answer
    x = 405.19

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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.