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Finding the Fourth Proportional to 1,191.93, 1,788.50 and 461.49

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Solution

The fourth proportional to 1,191.93, 1,788.50 and 461.49 is: 692.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191.93 : 1,788.50 = 461.49 : x
  2. Step 2: Convert to fraction form
    1,191.93/1,788.50 = 461.49/x
  3. Step 3: Cross multiply
    1,191.93x = 1,788.50 × 461.49
  4. Step 4: Simplify right side
    1,191.93x = 825,374.87
  5. Step 5: Solve for x
    x = 825,374.87/1,191.93
  6. Step 6: Final answer
    x = 692.47

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Double scale
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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.