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Finding the Fourth Proportional to 1,171.53, 1,757.57 and 1,153.17

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Solution

The fourth proportional to 1,171.53, 1,757.57 and 1,153.17 is: 1,730.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,171.53 : 1,757.57 = 1,153.17 : x
  2. Step 2: Convert to fraction form
    1,171.53/1,757.57 = 1,153.17/x
  3. Step 3: Cross multiply
    1,171.53x = 1,757.57 × 1,153.17
  4. Step 4: Simplify right side
    1,171.53x = 2,026,771.23
  5. Step 5: Solve for x
    x = 2,026,771.23/1,171.53
  6. Step 6: Final answer
    x = 1,730.02

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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.