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Finding the Fourth Proportional to 1,350.11, 1,863.19 and 790.63

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Solution

The fourth proportional to 1,350.11, 1,863.19 and 790.63 is: 1,091.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,350.11 : 1,863.19 = 790.63 : x
  2. Step 2: Convert to fraction form
    1,350.11/1,863.19 = 790.63/x
  3. Step 3: Cross multiply
    1,350.11x = 1,863.19 × 790.63
  4. Step 4: Simplify right side
    1,350.11x = 1,473,093.91
  5. Step 5: Solve for x
    x = 1,473,093.91/1,350.11
  6. Step 6: Final answer
    x = 1,091.09

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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.