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Finding the Fourth Proportional to 1,177.10, 1,764.36 and 766.52

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Solution

The fourth proportional to 1,177.10, 1,764.36 and 766.52 is: 1,148.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,177.10 : 1,764.36 = 766.52 : x
  2. Step 2: Convert to fraction form
    1,177.10/1,764.36 = 766.52/x
  3. Step 3: Cross multiply
    1,177.10x = 1,764.36 × 766.52
  4. Step 4: Simplify right side
    1,177.10x = 1,352,408.41
  5. Step 5: Solve for x
    x = 1,352,408.41/1,177.10
  6. Step 6: Final answer
    x = 1,148.94

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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.