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Finding the Fourth Proportional to 739.24, 1,109.10 and 670.60

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Solution

The fourth proportional to 739.24, 1,109.10 and 670.60 is: 1,006.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    739.24 : 1,109.10 = 670.60 : x
  2. Step 2: Convert to fraction form
    739.24/1,109.10 = 670.60/x
  3. Step 3: Cross multiply
    739.24x = 1,109.10 × 670.60
  4. Step 4: Simplify right side
    739.24x = 743,762.46
  5. Step 5: Solve for x
    x = 743,762.46/739.24
  6. Step 6: Final answer
    x = 1,006.12

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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.