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Finding the Fourth Proportional to 474.24, 655.66 and 400.43

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Solution

The fourth proportional to 474.24, 655.66 and 400.43 is: 553.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.24 : 655.66 = 400.43 : x
  2. Step 2: Convert to fraction form
    474.24/655.66 = 400.43/x
  3. Step 3: Cross multiply
    474.24x = 655.66 × 400.43
  4. Step 4: Simplify right side
    474.24x = 262,545.93
  5. Step 5: Solve for x
    x = 262,545.93/474.24
  6. Step 6: Final answer
    x = 553.61

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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.