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Finding the Fourth Proportional to 324.42, 486.72 and 151.08

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Solution

The fourth proportional to 324.42, 486.72 and 151.08 is: 226.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    324.42 : 486.72 = 151.08 : x
  2. Step 2: Convert to fraction form
    324.42/486.72 = 151.08/x
  3. Step 3: Cross multiply
    324.42x = 486.72 × 151.08
  4. Step 4: Simplify right side
    324.42x = 73,533.66
  5. Step 5: Solve for x
    x = 73,533.66/324.42
  6. Step 6: Final answer
    x = 226.66

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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.