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Finding the Fourth Proportional to 151.79, 226.07 and 145.13

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Solution

The fourth proportional to 151.79, 226.07 and 145.13 is: 216.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.79 : 226.07 = 145.13 : x
  2. Step 2: Convert to fraction form
    151.79/226.07 = 145.13/x
  3. Step 3: Cross multiply
    151.79x = 226.07 × 145.13
  4. Step 4: Simplify right side
    151.79x = 32,809.54
  5. Step 5: Solve for x
    x = 32,809.54/151.79
  6. Step 6: Final answer
    x = 216.15

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.