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Finding the Fourth Proportional to 473.32, 653.08 and 276.80

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Solution

The fourth proportional to 473.32, 653.08 and 276.80 is: 381.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.32 : 653.08 = 276.80 : x
  2. Step 2: Convert to fraction form
    473.32/653.08 = 276.80/x
  3. Step 3: Cross multiply
    473.32x = 653.08 × 276.80
  4. Step 4: Simplify right side
    473.32x = 180,772.54
  5. Step 5: Solve for x
    x = 180,772.54/473.32
  6. Step 6: Final answer
    x = 381.92

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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.