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Finding the Fourth Proportional to 338.18, 469.80 and 334.80

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Solution

The fourth proportional to 338.18, 469.80 and 334.80 is: 465.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    338.18 : 469.80 = 334.80 : x
  2. Step 2: Convert to fraction form
    338.18/469.80 = 334.80/x
  3. Step 3: Cross multiply
    338.18x = 469.80 × 334.80
  4. Step 4: Simplify right side
    338.18x = 157,289.04
  5. Step 5: Solve for x
    x = 157,289.04/338.18
  6. Step 6: Final answer
    x = 465.11

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.