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Finding the Fourth Proportional to 472.74, 652.39 and 276.35

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Solution

The fourth proportional to 472.74, 652.39 and 276.35 is: 381.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    472.74 : 652.39 = 276.35 : x
  2. Step 2: Convert to fraction form
    472.74/652.39 = 276.35/x
  3. Step 3: Cross multiply
    472.74x = 652.39 × 276.35
  4. Step 4: Simplify right side
    472.74x = 180,286.59
  5. Step 5: Solve for x
    x = 180,286.59/472.74
  6. Step 6: Final answer
    x = 381.37

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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.