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Finding the Fourth Proportional to 710.67, 980.73 and 415.97

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Solution

The fourth proportional to 710.67, 980.73 and 415.97 is: 574.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.67 : 980.73 = 415.97 : x
  2. Step 2: Convert to fraction form
    710.67/980.73 = 415.97/x
  3. Step 3: Cross multiply
    710.67x = 980.73 × 415.97
  4. Step 4: Simplify right side
    710.67x = 407,949.35
  5. Step 5: Solve for x
    x = 407,949.35/710.67
  6. Step 6: Final answer
    x = 574.03

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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.