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Finding the Fourth Proportional to 674.76, 937.41 and 668.76

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Solution

The fourth proportional to 674.76, 937.41 and 668.76 is: 929.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.76 : 937.41 = 668.76 : x
  2. Step 2: Convert to fraction form
    674.76/937.41 = 668.76/x
  3. Step 3: Cross multiply
    674.76x = 937.41 × 668.76
  4. Step 4: Simplify right side
    674.76x = 626,902.31
  5. Step 5: Solve for x
    x = 626,902.31/674.76
  6. Step 6: Final answer
    x = 929.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.