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Finding the Fourth Proportional to 471.80, 706.76 and 266.06

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Solution

The fourth proportional to 471.80, 706.76 and 266.06 is: 398.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.80 : 706.76 = 266.06 : x
  2. Step 2: Convert to fraction form
    471.80/706.76 = 266.06/x
  3. Step 3: Cross multiply
    471.80x = 706.76 × 266.06
  4. Step 4: Simplify right side
    471.80x = 188,040.57
  5. Step 5: Solve for x
    x = 188,040.57/471.80
  6. Step 6: Final answer
    x = 398.56

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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.