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Finding the Fourth Proportional to 470.24, 648.84 and 339.44

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Solution

The fourth proportional to 470.24, 648.84 and 339.44 is: 468.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.24 : 648.84 = 339.44 : x
  2. Step 2: Convert to fraction form
    470.24/648.84 = 339.44/x
  3. Step 3: Cross multiply
    470.24x = 648.84 × 339.44
  4. Step 4: Simplify right side
    470.24x = 220,242.25
  5. Step 5: Solve for x
    x = 220,242.25/470.24
  6. Step 6: Final answer
    x = 468.36

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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.