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Finding the Fourth Proportional to 1,150.60, 1,721.78 and 997.06

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Solution

The fourth proportional to 1,150.60, 1,721.78 and 997.06 is: 1,492.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,150.60 : 1,721.78 = 997.06 : x
  2. Step 2: Convert to fraction form
    1,150.60/1,721.78 = 997.06/x
  3. Step 3: Cross multiply
    1,150.60x = 1,721.78 × 997.06
  4. Step 4: Simplify right side
    1,150.60x = 1,716,717.97
  5. Step 5: Solve for x
    x = 1,716,717.97/1,150.60
  6. Step 6: Final answer
    x = 1,492.02

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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.