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Finding the Fourth Proportional to 713.97, 984.99 and 448.25

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Solution

The fourth proportional to 713.97, 984.99 and 448.25 is: 618.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.97 : 984.99 = 448.25 : x
  2. Step 2: Convert to fraction form
    713.97/984.99 = 448.25/x
  3. Step 3: Cross multiply
    713.97x = 984.99 × 448.25
  4. Step 4: Simplify right side
    713.97x = 441,521.77
  5. Step 5: Solve for x
    x = 441,521.77/713.97
  6. Step 6: Final answer
    x = 618.41

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1.5x scale

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.