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Finding the Fourth Proportional to 473.17, 653 and 276.64

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Solution

The fourth proportional to 473.17, 653 and 276.64 is: 381.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.17 : 653 = 276.64 : x
  2. Step 2: Convert to fraction form
    473.17/653 = 276.64/x
  3. Step 3: Cross multiply
    473.17x = 653 × 276.64
  4. Step 4: Simplify right side
    473.17x = 180,645.92
  5. Step 5: Solve for x
    x = 180,645.92/473.17
  6. Step 6: Final answer
    x = 381.78

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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.