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Finding the Fourth Proportional to 1,169.36, 1,753.30 and 656.72

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Solution

The fourth proportional to 1,169.36, 1,753.30 and 656.72 is: 984.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,169.36 : 1,753.30 = 656.72 : x
  2. Step 2: Convert to fraction form
    1,169.36/1,753.30 = 656.72/x
  3. Step 3: Cross multiply
    1,169.36x = 1,753.30 × 656.72
  4. Step 4: Simplify right side
    1,169.36x = 1,151,427.18
  5. Step 5: Solve for x
    x = 1,151,427.18/1,169.36
  6. Step 6: Final answer
    x = 984.66

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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.