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Finding the Fourth Proportional to 400.51, 552.74 and 243.10

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Solution

The fourth proportional to 400.51, 552.74 and 243.10 is: 335.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.51 : 552.74 = 243.10 : x
  2. Step 2: Convert to fraction form
    400.51/552.74 = 243.10/x
  3. Step 3: Cross multiply
    400.51x = 552.74 × 243.10
  4. Step 4: Simplify right side
    400.51x = 134,370.91
  5. Step 5: Solve for x
    x = 134,370.91/400.51
  6. Step 6: Final answer
    x = 335.50

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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.