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Finding the Fourth Proportional to 400.84, 553.68 and 296.14

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Solution

The fourth proportional to 400.84, 553.68 and 296.14 is: 409.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.84 : 553.68 = 296.14 : x
  2. Step 2: Convert to fraction form
    400.84/553.68 = 296.14/x
  3. Step 3: Cross multiply
    400.84x = 553.68 × 296.14
  4. Step 4: Simplify right side
    400.84x = 163,966.80
  5. Step 5: Solve for x
    x = 163,966.80/400.84
  6. Step 6: Final answer
    x = 409.06

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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.