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Finding the Fourth Proportional to 151.12, 226.80 and 145.36

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Solution

The fourth proportional to 151.12, 226.80 and 145.36 is: 218.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.12 : 226.80 = 145.36 : x
  2. Step 2: Convert to fraction form
    151.12/226.80 = 145.36/x
  3. Step 3: Cross multiply
    151.12x = 226.80 × 145.36
  4. Step 4: Simplify right side
    151.12x = 32,967.65
  5. Step 5: Solve for x
    x = 32,967.65/151.12
  6. Step 6: Final answer
    x = 218.16

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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.