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Finding the Fourth Proportional to 433.68, 649.26 and 227.76

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Solution

The fourth proportional to 433.68, 649.26 and 227.76 is: 340.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    433.68 : 649.26 = 227.76 : x
  2. Step 2: Convert to fraction form
    433.68/649.26 = 227.76/x
  3. Step 3: Cross multiply
    433.68x = 649.26 × 227.76
  4. Step 4: Simplify right side
    433.68x = 147,875.46
  5. Step 5: Solve for x
    x = 147,875.46/433.68
  6. Step 6: Final answer
    x = 340.98

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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.