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Finding the Fourth Proportional to 150.81, 225.14 and 127.83

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Solution

The fourth proportional to 150.81, 225.14 and 127.83 is: 190.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    150.81 : 225.14 = 127.83 : x
  2. Step 2: Convert to fraction form
    150.81/225.14 = 127.83/x
  3. Step 3: Cross multiply
    150.81x = 225.14 × 127.83
  4. Step 4: Simplify right side
    150.81x = 28,779.65
  5. Step 5: Solve for x
    x = 28,779.65/150.81
  6. Step 6: Final answer
    x = 190.83

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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.