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Finding the Fourth Proportional to 749.59, 1,124.39 and 262.65

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Solution

The fourth proportional to 749.59, 1,124.39 and 262.65 is: 393.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    749.59 : 1,124.39 = 262.65 : x
  2. Step 2: Convert to fraction form
    749.59/1,124.39 = 262.65/x
  3. Step 3: Cross multiply
    749.59x = 1,124.39 × 262.65
  4. Step 4: Simplify right side
    749.59x = 295,324.50
  5. Step 5: Solve for x
    x = 295,324.50/749.59
  6. Step 6: Final answer
    x = 393.98

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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.