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Finding the Fourth Proportional to 716.05, 1,074.21 and 229.01

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Solution

The fourth proportional to 716.05, 1,074.21 and 229.01 is: 343.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.05 : 1,074.21 = 229.01 : x
  2. Step 2: Convert to fraction form
    716.05/1,074.21 = 229.01/x
  3. Step 3: Cross multiply
    716.05x = 1,074.21 × 229.01
  4. Step 4: Simplify right side
    716.05x = 245,999.46
  5. Step 5: Solve for x
    x = 245,999.46/716.05
  6. Step 6: Final answer
    x = 343.55

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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.