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Finding the Fourth Proportional to 1,213.16, 1,819.82 and 473.38

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Solution

The fourth proportional to 1,213.16, 1,819.82 and 473.38 is: 710.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213.16 : 1,819.82 = 473.38 : x
  2. Step 2: Convert to fraction form
    1,213.16/1,819.82 = 473.38/x
  3. Step 3: Cross multiply
    1,213.16x = 1,819.82 × 473.38
  4. Step 4: Simplify right side
    1,213.16x = 861,463.03
  5. Step 5: Solve for x
    x = 861,463.03/1,213.16
  6. Step 6: Final answer
    x = 710.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.