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Finding the Fourth Proportional to 225.44, 310.76 and 151.74

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Solution

The fourth proportional to 225.44, 310.76 and 151.74 is: 209.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.44 : 310.76 = 151.74 : x
  2. Step 2: Convert to fraction form
    225.44/310.76 = 151.74/x
  3. Step 3: Cross multiply
    225.44x = 310.76 × 151.74
  4. Step 4: Simplify right side
    225.44x = 47,154.72
  5. Step 5: Solve for x
    x = 47,154.72/225.44
  6. Step 6: Final answer
    x = 209.17

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.