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Finding the Fourth Proportional to 479.23, 660.12 and 339.10

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Solution

The fourth proportional to 479.23, 660.12 and 339.10 is: 467.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    479.23 : 660.12 = 339.10 : x
  2. Step 2: Convert to fraction form
    479.23/660.12 = 339.10/x
  3. Step 3: Cross multiply
    479.23x = 660.12 × 339.10
  4. Step 4: Simplify right side
    479.23x = 223,846.69
  5. Step 5: Solve for x
    x = 223,846.69/479.23
  6. Step 6: Final answer
    x = 467.10

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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.