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Finding the Fourth Proportional to 163.02, 224.94 and 100.92

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Solution

The fourth proportional to 163.02, 224.94 and 100.92 is: 139.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    163.02 : 224.94 = 100.92 : x
  2. Step 2: Convert to fraction form
    163.02/224.94 = 100.92/x
  3. Step 3: Cross multiply
    163.02x = 224.94 × 100.92
  4. Step 4: Simplify right side
    163.02x = 22,700.94
  5. Step 5: Solve for x
    x = 22,700.94/163.02
  6. Step 6: Final answer
    x = 139.25

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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.