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Finding the Fourth Proportional to 472.56, 652.17 and 276

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Solution

The fourth proportional to 472.56, 652.17 and 276 is: 380.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.56 : 652.17 = 276 : x
  2. Step 2: Convert to fraction form
    472.56/652.17 = 276/x
  3. Step 3: Cross multiply
    472.56x = 652.17 × 276
  4. Step 4: Simplify right side
    472.56x = 179,998.92
  5. Step 5: Solve for x
    x = 179,998.92/472.56
  6. Step 6: Final answer
    x = 380.90

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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.