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Finding the Fourth Proportional to 739.09, 1,108.76 and 306.01

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Solution

The fourth proportional to 739.09, 1,108.76 and 306.01 is: 459.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    739.09 : 1,108.76 = 306.01 : x
  2. Step 2: Convert to fraction form
    739.09/1,108.76 = 306.01/x
  3. Step 3: Cross multiply
    739.09x = 1,108.76 × 306.01
  4. Step 4: Simplify right side
    739.09x = 339,291.65
  5. Step 5: Solve for x
    x = 339,291.65/739.09
  6. Step 6: Final answer
    x = 459.07

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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.