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Finding the Fourth Proportional to 472.11, 651.18 and 324.49

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Solution

The fourth proportional to 472.11, 651.18 and 324.49 is: 447.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.11 : 651.18 = 324.49 : x
  2. Step 2: Convert to fraction form
    472.11/651.18 = 324.49/x
  3. Step 3: Cross multiply
    472.11x = 651.18 × 324.49
  4. Step 4: Simplify right side
    472.11x = 211,301.40
  5. Step 5: Solve for x
    x = 211,301.40/472.11
  6. Step 6: Final answer
    x = 447.57

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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.