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Finding the Fourth Proportional to 471.42, 707.40 and 227.95

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Solution

The fourth proportional to 471.42, 707.40 and 227.95 is: 342.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.42 : 707.40 = 227.95 : x
  2. Step 2: Convert to fraction form
    471.42/707.40 = 227.95/x
  3. Step 3: Cross multiply
    471.42x = 707.40 × 227.95
  4. Step 4: Simplify right side
    471.42x = 161,250.06
  5. Step 5: Solve for x
    x = 161,250.06/471.42
  6. Step 6: Final answer
    x = 342.05

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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.