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Finding the Fourth Proportional to 710.28, 979.94 and 448.04

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Solution

The fourth proportional to 710.28, 979.94 and 448.04 is: 618.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.28 : 979.94 = 448.04 : x
  2. Step 2: Convert to fraction form
    710.28/979.94 = 448.04/x
  3. Step 3: Cross multiply
    710.28x = 979.94 × 448.04
  4. Step 4: Simplify right side
    710.28x = 439,052.32
  5. Step 5: Solve for x
    x = 439,052.32/710.28
  6. Step 6: Final answer
    x = 618.14

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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.