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Finding the Fourth Proportional to 472.75, 652.34 and 276.26

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Solution

The fourth proportional to 472.75, 652.34 and 276.26 is: 381.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.75 : 652.34 = 276.26 : x
  2. Step 2: Convert to fraction form
    472.75/652.34 = 276.26/x
  3. Step 3: Cross multiply
    472.75x = 652.34 × 276.26
  4. Step 4: Simplify right side
    472.75x = 180,215.45
  5. Step 5: Solve for x
    x = 180,215.45/472.75
  6. Step 6: Final answer
    x = 381.21

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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.