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Finding the Fourth Proportional to 312.76, 468.91 and 150.56

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Solution

The fourth proportional to 312.76, 468.91 and 150.56 is: 225.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    312.76 : 468.91 = 150.56 : x
  2. Step 2: Convert to fraction form
    312.76/468.91 = 150.56/x
  3. Step 3: Cross multiply
    312.76x = 468.91 × 150.56
  4. Step 4: Simplify right side
    312.76x = 70,596.37
  5. Step 5: Solve for x
    x = 70,596.37/312.76
  6. Step 6: Final answer
    x = 225.72

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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.