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Finding the Fourth Proportional to 713.19, 1,069.79 and 226.25

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Solution

The fourth proportional to 713.19, 1,069.79 and 226.25 is: 339.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.19 : 1,069.79 = 226.25 : x
  2. Step 2: Convert to fraction form
    713.19/1,069.79 = 226.25/x
  3. Step 3: Cross multiply
    713.19x = 1,069.79 × 226.25
  4. Step 4: Simplify right side
    713.19x = 242,039.99
  5. Step 5: Solve for x
    x = 242,039.99/713.19
  6. Step 6: Final answer
    x = 339.38

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Similar ratio
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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.