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Finding the Fourth Proportional to 1,195.56, 1,782 and 1,151.28

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Solution

The fourth proportional to 1,195.56, 1,782 and 1,151.28 is: 1,716

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,195.56 : 1,782 = 1,151.28 : x
  2. Step 2: Convert to fraction form
    1,195.56/1,782 = 1,151.28/x
  3. Step 3: Cross multiply
    1,195.56x = 1,782 × 1,151.28
  4. Step 4: Simplify right side
    1,195.56x = 2,051,580.96
  5. Step 5: Solve for x
    x = 2,051,580.96/1,195.56
  6. Step 6: Final answer
    x = 1,716

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.