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Finding the Fourth Proportional to 470.86, 650.37 and 339.64

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Solution

The fourth proportional to 470.86, 650.37 and 339.64 is: 469.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    470.86 : 650.37 = 339.64 : x
  2. Step 2: Convert to fraction form
    470.86/650.37 = 339.64/x
  3. Step 3: Cross multiply
    470.86x = 650.37 × 339.64
  4. Step 4: Simplify right side
    470.86x = 220,891.67
  5. Step 5: Solve for x
    x = 220,891.67/470.86
  6. Step 6: Final answer
    x = 469.12

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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.