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Finding the Fourth Proportional to 1,063.97, 1,468.64 and 660.51

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Solution

The fourth proportional to 1,063.97, 1,468.64 and 660.51 is: 911.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,063.97 : 1,468.64 = 660.51 : x
  2. Step 2: Convert to fraction form
    1,063.97/1,468.64 = 660.51/x
  3. Step 3: Cross multiply
    1,063.97x = 1,468.64 × 660.51
  4. Step 4: Simplify right side
    1,063.97x = 970,053.06
  5. Step 5: Solve for x
    x = 970,053.06/1,063.97
  6. Step 6: Final answer
    x = 911.73

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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.