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Finding the Fourth Proportional to 400.92, 553.47 and 296.28

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Solution

The fourth proportional to 400.92, 553.47 and 296.28 is: 409.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.92 : 553.47 = 296.28 : x
  2. Step 2: Convert to fraction form
    400.92/553.47 = 296.28/x
  3. Step 3: Cross multiply
    400.92x = 553.47 × 296.28
  4. Step 4: Simplify right side
    400.92x = 163,982.09
  5. Step 5: Solve for x
    x = 163,982.09/400.92
  6. Step 6: Final answer
    x = 409.01

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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.