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Finding the Fourth Proportional to 1,344.25, 1,855.02 and 746.73

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Solution

The fourth proportional to 1,344.25, 1,855.02 and 746.73 is: 1,030.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,344.25 : 1,855.02 = 746.73 : x
  2. Step 2: Convert to fraction form
    1,344.25/1,855.02 = 746.73/x
  3. Step 3: Cross multiply
    1,344.25x = 1,855.02 × 746.73
  4. Step 4: Simplify right side
    1,344.25x = 1,385,189.81
  5. Step 5: Solve for x
    x = 1,385,189.81/1,344.25
  6. Step 6: Final answer
    x = 1,030.46

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Double scale
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1.5x scale

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.