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Finding the Fourth Proportional to 713.80, 984.75 and 448.12

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Solution

The fourth proportional to 713.80, 984.75 and 448.12 is: 618.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.80 : 984.75 = 448.12 : x
  2. Step 2: Convert to fraction form
    713.80/984.75 = 448.12/x
  3. Step 3: Cross multiply
    713.80x = 984.75 × 448.12
  4. Step 4: Simplify right side
    713.80x = 441,286.17
  5. Step 5: Solve for x
    x = 441,286.17/713.80
  6. Step 6: Final answer
    x = 618.22

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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.