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Finding the Fourth Proportional to 674.45, 1,010.93 and 263.51

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Solution

The fourth proportional to 674.45, 1,010.93 and 263.51 is: 394.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    674.45 : 1,010.93 = 263.51 : x
  2. Step 2: Convert to fraction form
    674.45/1,010.93 = 263.51/x
  3. Step 3: Cross multiply
    674.45x = 1,010.93 × 263.51
  4. Step 4: Simplify right side
    674.45x = 266,383.79
  5. Step 5: Solve for x
    x = 266,383.79/674.45
  6. Step 6: Final answer
    x = 394.97

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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.