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Finding the Fourth Proportional to 739.40, 1,110.47 and 602.71

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Solution

The fourth proportional to 739.40, 1,110.47 and 602.71 is: 905.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    739.40 : 1,110.47 = 602.71 : x
  2. Step 2: Convert to fraction form
    739.40/1,110.47 = 602.71/x
  3. Step 3: Cross multiply
    739.40x = 1,110.47 × 602.71
  4. Step 4: Simplify right side
    739.40x = 669,289.75
  5. Step 5: Solve for x
    x = 669,289.75/739.40
  6. Step 6: Final answer
    x = 905.18

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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.