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Finding the Fourth Proportional to 186.06, 256.58 and 144.54

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Solution

The fourth proportional to 186.06, 256.58 and 144.54 is: 199.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    186.06 : 256.58 = 144.54 : x
  2. Step 2: Convert to fraction form
    186.06/256.58 = 144.54/x
  3. Step 3: Cross multiply
    186.06x = 256.58 × 144.54
  4. Step 4: Simplify right side
    186.06x = 37,086.07
  5. Step 5: Solve for x
    x = 37,086.07/186.06
  6. Step 6: Final answer
    x = 199.32

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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.