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Finding the Fourth Proportional to 255.18, 352.15 and 144.63

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Solution

The fourth proportional to 255.18, 352.15 and 144.63 is: 199.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.18 : 352.15 = 144.63 : x
  2. Step 2: Convert to fraction form
    255.18/352.15 = 144.63/x
  3. Step 3: Cross multiply
    255.18x = 352.15 × 144.63
  4. Step 4: Simplify right side
    255.18x = 50,931.09
  5. Step 5: Solve for x
    x = 50,931.09/255.18
  6. Step 6: Final answer
    x = 199.59

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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.