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Finding the Fourth Proportional to 674.75, 1,010.80 and 601.28

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Solution

The fourth proportional to 674.75, 1,010.80 and 601.28 is: 900.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.75 : 1,010.80 = 601.28 : x
  2. Step 2: Convert to fraction form
    674.75/1,010.80 = 601.28/x
  3. Step 3: Cross multiply
    674.75x = 1,010.80 × 601.28
  4. Step 4: Simplify right side
    674.75x = 607,769.93
  5. Step 5: Solve for x
    x = 607,769.93/674.75
  6. Step 6: Final answer
    x = 900.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.