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Finding the Fourth Proportional to 1,099.70, 1,517.64 and 602.36

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Solution

The fourth proportional to 1,099.70, 1,517.64 and 602.36 is: 831.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099.70 : 1,517.64 = 602.36 : x
  2. Step 2: Convert to fraction form
    1,099.70/1,517.64 = 602.36/x
  3. Step 3: Cross multiply
    1,099.70x = 1,517.64 × 602.36
  4. Step 4: Simplify right side
    1,099.70x = 914,161.47
  5. Step 5: Solve for x
    x = 914,161.47/1,099.70
  6. Step 6: Final answer
    x = 831.28

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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.