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Finding the Fourth Proportional to 709.52, 973.88 and 679.44

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Solution

The fourth proportional to 709.52, 973.88 and 679.44 is: 932.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    709.52 : 973.88 = 679.44 : x
  2. Step 2: Convert to fraction form
    709.52/973.88 = 679.44/x
  3. Step 3: Cross multiply
    709.52x = 973.88 × 679.44
  4. Step 4: Simplify right side
    709.52x = 661,693.03
  5. Step 5: Solve for x
    x = 661,693.03/709.52
  6. Step 6: Final answer
    x = 932.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.