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Finding the Fourth Proportional to 227.08, 313.09 and 187.90

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Solution

The fourth proportional to 227.08, 313.09 and 187.90 is: 259.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    227.08 : 313.09 = 187.90 : x
  2. Step 2: Convert to fraction form
    227.08/313.09 = 187.90/x
  3. Step 3: Cross multiply
    227.08x = 313.09 × 187.90
  4. Step 4: Simplify right side
    227.08x = 58,828.36
  5. Step 5: Solve for x
    x = 58,828.36/227.08
  6. Step 6: Final answer
    x = 259.07

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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.