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Finding the Fourth Proportional to 151.65, 227.21 and 70.47

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Solution

The fourth proportional to 151.65, 227.21 and 70.47 is: 105.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    151.65 : 227.21 = 70.47 : x
  2. Step 2: Convert to fraction form
    151.65/227.21 = 70.47/x
  3. Step 3: Cross multiply
    151.65x = 227.21 × 70.47
  4. Step 4: Simplify right side
    151.65x = 16,011.14
  5. Step 5: Solve for x
    x = 16,011.14/151.65
  6. Step 6: Final answer
    x = 105.58

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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.