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Finding the Fourth Proportional to 342.16, 472.44 and 276.96

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Solution

The fourth proportional to 342.16, 472.44 and 276.96 is: 382.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.16 : 472.44 = 276.96 : x
  2. Step 2: Convert to fraction form
    342.16/472.44 = 276.96/x
  3. Step 3: Cross multiply
    342.16x = 472.44 × 276.96
  4. Step 4: Simplify right side
    342.16x = 130,846.98
  5. Step 5: Solve for x
    x = 130,846.98/342.16
  6. Step 6: Final answer
    x = 382.41

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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.