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Finding the Fourth Proportional to 739.68, 1,108.44 and 717.51

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Solution

The fourth proportional to 739.68, 1,108.44 and 717.51 is: 1,075.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    739.68 : 1,108.44 = 717.51 : x
  2. Step 2: Convert to fraction form
    739.68/1,108.44 = 717.51/x
  3. Step 3: Cross multiply
    739.68x = 1,108.44 × 717.51
  4. Step 4: Simplify right side
    739.68x = 795,316.78
  5. Step 5: Solve for x
    x = 795,316.78/739.68
  6. Step 6: Final answer
    x = 1,075.22

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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.