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Finding the Fourth Proportional to 324.02, 486.30 and 194.15

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Solution

The fourth proportional to 324.02, 486.30 and 194.15 is: 291.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.02 : 486.30 = 194.15 : x
  2. Step 2: Convert to fraction form
    324.02/486.30 = 194.15/x
  3. Step 3: Cross multiply
    324.02x = 486.30 × 194.15
  4. Step 4: Simplify right side
    324.02x = 94,415.15
  5. Step 5: Solve for x
    x = 94,415.15/324.02
  6. Step 6: Final answer
    x = 291.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.