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Finding the Fourth Proportional to 1,203.19, 1,805.89 and 741.87

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Solution

The fourth proportional to 1,203.19, 1,805.89 and 741.87 is: 1,113.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,203.19 : 1,805.89 = 741.87 : x
  2. Step 2: Convert to fraction form
    1,203.19/1,805.89 = 741.87/x
  3. Step 3: Cross multiply
    1,203.19x = 1,805.89 × 741.87
  4. Step 4: Simplify right side
    1,203.19x = 1,339,726.58
  5. Step 5: Solve for x
    x = 1,339,726.58/1,203.19
  6. Step 6: Final answer
    x = 1,113.48

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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.