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Finding the Fourth Proportional to 1,099.87, 1,517.83 and 602.51

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Solution

The fourth proportional to 1,099.87, 1,517.83 and 602.51 is: 831.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099.87 : 1,517.83 = 602.51 : x
  2. Step 2: Convert to fraction form
    1,099.87/1,517.83 = 602.51/x
  3. Step 3: Cross multiply
    1,099.87x = 1,517.83 × 602.51
  4. Step 4: Simplify right side
    1,099.87x = 914,502.05
  5. Step 5: Solve for x
    x = 914,502.05/1,099.87
  6. Step 6: Final answer
    x = 831.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.