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Finding the Fourth Proportional to 473.21, 652.78 and 276.69

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Solution

The fourth proportional to 473.21, 652.78 and 276.69 is: 381.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.21 : 652.78 = 276.69 : x
  2. Step 2: Convert to fraction form
    473.21/652.78 = 276.69/x
  3. Step 3: Cross multiply
    473.21x = 652.78 × 276.69
  4. Step 4: Simplify right side
    473.21x = 180,617.70
  5. Step 5: Solve for x
    x = 180,617.70/473.21
  6. Step 6: Final answer
    x = 381.69

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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.