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Finding the Fourth Proportional to 1,191.84, 1,788.02 and 498.54

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Solution

The fourth proportional to 1,191.84, 1,788.02 and 498.54 is: 747.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191.84 : 1,788.02 = 498.54 : x
  2. Step 2: Convert to fraction form
    1,191.84/1,788.02 = 498.54/x
  3. Step 3: Cross multiply
    1,191.84x = 1,788.02 × 498.54
  4. Step 4: Simplify right side
    1,191.84x = 891,399.49
  5. Step 5: Solve for x
    x = 891,399.49/1,191.84
  6. Step 6: Final answer
    x = 747.92

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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.