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Finding the Fourth Proportional to 471.06, 649.78 and 302.94

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Solution

The fourth proportional to 471.06, 649.78 and 302.94 is: 417.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.06 : 649.78 = 302.94 : x
  2. Step 2: Convert to fraction form
    471.06/649.78 = 302.94/x
  3. Step 3: Cross multiply
    471.06x = 649.78 × 302.94
  4. Step 4: Simplify right side
    471.06x = 196,843.60
  5. Step 5: Solve for x
    x = 196,843.60/471.06
  6. Step 6: Final answer
    x = 417.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.