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Finding the Fourth Proportional to 749.07, 1,034.18 and 483.65

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Solution

The fourth proportional to 749.07, 1,034.18 and 483.65 is: 667.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    749.07 : 1,034.18 = 483.65 : x
  2. Step 2: Convert to fraction form
    749.07/1,034.18 = 483.65/x
  3. Step 3: Cross multiply
    749.07x = 1,034.18 × 483.65
  4. Step 4: Simplify right side
    749.07x = 500,173.57
  5. Step 5: Solve for x
    x = 500,173.57/749.07
  6. Step 6: Final answer
    x = 667.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.