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Finding the Fourth Proportional to 186.58, 257.51 and 107.95

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Solution

The fourth proportional to 186.58, 257.51 and 107.95 is: 148.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.58 : 257.51 = 107.95 : x
  2. Step 2: Convert to fraction form
    186.58/257.51 = 107.95/x
  3. Step 3: Cross multiply
    186.58x = 257.51 × 107.95
  4. Step 4: Simplify right side
    186.58x = 27,797.19
  5. Step 5: Solve for x
    x = 27,797.19/186.58
  6. Step 6: Final answer
    x = 148.98

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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.