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Finding the Fourth Proportional to 1,100.05, 1,518.07 and 602.68

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Solution

The fourth proportional to 1,100.05, 1,518.07 and 602.68 is: 831.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,100.05 : 1,518.07 = 602.68 : x
  2. Step 2: Convert to fraction form
    1,100.05/1,518.07 = 602.68/x
  3. Step 3: Cross multiply
    1,100.05x = 1,518.07 × 602.68
  4. Step 4: Simplify right side
    1,100.05x = 914,905.13
  5. Step 5: Solve for x
    x = 914,905.13/1,100.05
  6. Step 6: Final answer
    x = 831.70

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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.