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Finding the Fourth Proportional to 914.97, 1,371.51 and 482.43

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Solution

The fourth proportional to 914.97, 1,371.51 and 482.43 is: 723.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    914.97 : 1,371.51 = 482.43 : x
  2. Step 2: Convert to fraction form
    914.97/1,371.51 = 482.43/x
  3. Step 3: Cross multiply
    914.97x = 1,371.51 × 482.43
  4. Step 4: Simplify right side
    914.97x = 661,657.57
  5. Step 5: Solve for x
    x = 661,657.57/914.97
  6. Step 6: Final answer
    x = 723.15

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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.