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Finding the Fourth Proportional to 673.39, 1,010.15 and 262.56

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Solution

The fourth proportional to 673.39, 1,010.15 and 262.56 is: 393.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    673.39 : 1,010.15 = 262.56 : x
  2. Step 2: Convert to fraction form
    673.39/1,010.15 = 262.56/x
  3. Step 3: Cross multiply
    673.39x = 1,010.15 × 262.56
  4. Step 4: Simplify right side
    673.39x = 265,224.98
  5. Step 5: Solve for x
    x = 265,224.98/673.39
  6. Step 6: Final answer
    x = 393.87

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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.