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Finding the Fourth Proportional to 471.28, 706.68 and 146.60

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Solution

The fourth proportional to 471.28, 706.68 and 146.60 is: 219.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.28 : 706.68 = 146.60 : x
  2. Step 2: Convert to fraction form
    471.28/706.68 = 146.60/x
  3. Step 3: Cross multiply
    471.28x = 706.68 × 146.60
  4. Step 4: Simplify right side
    471.28x = 103,599.29
  5. Step 5: Solve for x
    x = 103,599.29/471.28
  6. Step 6: Final answer
    x = 219.83

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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.