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Finding the Fourth Proportional to 471.24, 648.96 and 340.04

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Solution

The fourth proportional to 471.24, 648.96 and 340.04 is: 468.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    471.24 : 648.96 = 340.04 : x
  2. Step 2: Convert to fraction form
    471.24/648.96 = 340.04/x
  3. Step 3: Cross multiply
    471.24x = 648.96 × 340.04
  4. Step 4: Simplify right side
    471.24x = 220,672.01
  5. Step 5: Solve for x
    x = 220,672.01/471.24
  6. Step 6: Final answer
    x = 468.28

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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.