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Finding the Fourth Proportional to 675.71, 926.39 and 663.41

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Solution

The fourth proportional to 675.71, 926.39 and 663.41 is: 909.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    675.71 : 926.39 = 663.41 : x
  2. Step 2: Convert to fraction form
    675.71/926.39 = 663.41/x
  3. Step 3: Cross multiply
    675.71x = 926.39 × 663.41
  4. Step 4: Simplify right side
    675.71x = 614,571.76
  5. Step 5: Solve for x
    x = 614,571.76/675.71
  6. Step 6: Final answer
    x = 909.53

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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.