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Finding the Fourth Proportional to 471.91, 651.12 and 275.38

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Solution

The fourth proportional to 471.91, 651.12 and 275.38 is: 379.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.91 : 651.12 = 275.38 : x
  2. Step 2: Convert to fraction form
    471.91/651.12 = 275.38/x
  3. Step 3: Cross multiply
    471.91x = 651.12 × 275.38
  4. Step 4: Simplify right side
    471.91x = 179,305.43
  5. Step 5: Solve for x
    x = 179,305.43/471.91
  6. Step 6: Final answer
    x = 379.96

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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.