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Finding the Fourth Proportional to 1,246.50, 1,719.99 and 798.12

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Solution

The fourth proportional to 1,246.50, 1,719.99 and 798.12 is: 1,101.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.50 : 1,719.99 = 798.12 : x
  2. Step 2: Convert to fraction form
    1,246.50/1,719.99 = 798.12/x
  3. Step 3: Cross multiply
    1,246.50x = 1,719.99 × 798.12
  4. Step 4: Simplify right side
    1,246.50x = 1,372,758.42
  5. Step 5: Solve for x
    x = 1,372,758.42/1,246.50
  6. Step 6: Final answer
    x = 1,101.29

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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.