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Finding the Fourth Proportional to 163.17, 245.74 and 144.15

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Solution

The fourth proportional to 163.17, 245.74 and 144.15 is: 217.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.17 : 245.74 = 144.15 : x
  2. Step 2: Convert to fraction form
    163.17/245.74 = 144.15/x
  3. Step 3: Cross multiply
    163.17x = 245.74 × 144.15
  4. Step 4: Simplify right side
    163.17x = 35,423.42
  5. Step 5: Solve for x
    x = 35,423.42/163.17
  6. Step 6: Final answer
    x = 217.10

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.