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Finding the Fourth Proportional to 400.14, 551.82 and 260.11

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Solution

The fourth proportional to 400.14, 551.82 and 260.11 is: 358.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.14 : 551.82 = 260.11 : x
  2. Step 2: Convert to fraction form
    400.14/551.82 = 260.11/x
  3. Step 3: Cross multiply
    400.14x = 551.82 × 260.11
  4. Step 4: Simplify right side
    400.14x = 143,533.90
  5. Step 5: Solve for x
    x = 143,533.90/400.14
  6. Step 6: Final answer
    x = 358.71

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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.