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Finding the Fourth Proportional to 400.63, 552.74 and 225.94

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Solution

The fourth proportional to 400.63, 552.74 and 225.94 is: 311.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.63 : 552.74 = 225.94 : x
  2. Step 2: Convert to fraction form
    400.63/552.74 = 225.94/x
  3. Step 3: Cross multiply
    400.63x = 552.74 × 225.94
  4. Step 4: Simplify right side
    400.63x = 124,886.08
  5. Step 5: Solve for x
    x = 124,886.08/400.63
  6. Step 6: Final answer
    x = 311.72

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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.