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Finding the Fourth Proportional to 400.06, 552.14 and 289.90

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Solution

The fourth proportional to 400.06, 552.14 and 289.90 is: 400.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.06 : 552.14 = 289.90 : x
  2. Step 2: Convert to fraction form
    400.06/552.14 = 289.90/x
  3. Step 3: Cross multiply
    400.06x = 552.14 × 289.90
  4. Step 4: Simplify right side
    400.06x = 160,065.39
  5. Step 5: Solve for x
    x = 160,065.39/400.06
  6. Step 6: Final answer
    x = 400.10

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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.