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Finding the Fourth Proportional to 217.58, 300.03 and 186.59

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Solution

The fourth proportional to 217.58, 300.03 and 186.59 is: 257.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    217.58 : 300.03 = 186.59 : x
  2. Step 2: Convert to fraction form
    217.58/300.03 = 186.59/x
  3. Step 3: Cross multiply
    217.58x = 300.03 × 186.59
  4. Step 4: Simplify right side
    217.58x = 55,981.10
  5. Step 5: Solve for x
    x = 55,981.10/217.58
  6. Step 6: Final answer
    x = 257.30

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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.