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Finding the Fourth Proportional to 1,194.47, 1,788.23 and 887.68

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Solution

The fourth proportional to 1,194.47, 1,788.23 and 887.68 is: 1,328.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,194.47 : 1,788.23 = 887.68 : x
  2. Step 2: Convert to fraction form
    1,194.47/1,788.23 = 887.68/x
  3. Step 3: Cross multiply
    1,194.47x = 1,788.23 × 887.68
  4. Step 4: Simplify right side
    1,194.47x = 1,587,380.50
  5. Step 5: Solve for x
    x = 1,587,380.50/1,194.47
  6. Step 6: Final answer
    x = 1,328.94

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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.