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Finding the Fourth Proportional to 710.43, 980.39 and 571.52

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Solution

The fourth proportional to 710.43, 980.39 and 571.52 is: 788.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    710.43 : 980.39 = 571.52 : x
  2. Step 2: Convert to fraction form
    710.43/980.39 = 571.52/x
  3. Step 3: Cross multiply
    710.43x = 980.39 × 571.52
  4. Step 4: Simplify right side
    710.43x = 560,317.64
  5. Step 5: Solve for x
    x = 560,317.64/710.43
  6. Step 6: Final answer
    x = 788.70

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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.