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Finding the Fourth Proportional to 467.03, 644.02 and 400.87

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Solution

The fourth proportional to 467.03, 644.02 and 400.87 is: 552.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    467.03 : 644.02 = 400.87 : x
  2. Step 2: Convert to fraction form
    467.03/644.02 = 400.87/x
  3. Step 3: Cross multiply
    467.03x = 644.02 × 400.87
  4. Step 4: Simplify right side
    467.03x = 258,168.30
  5. Step 5: Solve for x
    x = 258,168.30/467.03
  6. Step 6: Final answer
    x = 552.79

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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.