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Finding the Fourth Proportional to 679.69, 937.52 and 571.66

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Solution

The fourth proportional to 679.69, 937.52 and 571.66 is: 788.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.69 : 937.52 = 571.66 : x
  2. Step 2: Convert to fraction form
    679.69/937.52 = 571.66/x
  3. Step 3: Cross multiply
    679.69x = 937.52 × 571.66
  4. Step 4: Simplify right side
    679.69x = 535,942.84
  5. Step 5: Solve for x
    x = 535,942.84/679.69
  6. Step 6: Final answer
    x = 788.51

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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.