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Finding the Fourth Proportional to 710.12, 979.38 and 448.04

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Solution

The fourth proportional to 710.12, 979.38 and 448.04 is: 617.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.12 : 979.38 = 448.04 : x
  2. Step 2: Convert to fraction form
    710.12/979.38 = 448.04/x
  3. Step 3: Cross multiply
    710.12x = 979.38 × 448.04
  4. Step 4: Simplify right side
    710.12x = 438,801.42
  5. Step 5: Solve for x
    x = 438,801.42/710.12
  6. Step 6: Final answer
    x = 617.93

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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.