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Finding the Fourth Proportional to 145.92, 201.24 and 118.38

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Solution

The fourth proportional to 145.92, 201.24 and 118.38 is: 163.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.92 : 201.24 = 118.38 : x
  2. Step 2: Convert to fraction form
    145.92/201.24 = 118.38/x
  3. Step 3: Cross multiply
    145.92x = 201.24 × 118.38
  4. Step 4: Simplify right side
    145.92x = 23,822.79
  5. Step 5: Solve for x
    x = 23,822.79/145.92
  6. Step 6: Final answer
    x = 163.26

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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.