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Finding the Fourth Proportional to 145.44, 217.68 and 137.04

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Solution

The fourth proportional to 145.44, 217.68 and 137.04 is: 205.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.44 : 217.68 = 137.04 : x
  2. Step 2: Convert to fraction form
    145.44/217.68 = 137.04/x
  3. Step 3: Cross multiply
    145.44x = 217.68 × 137.04
  4. Step 4: Simplify right side
    145.44x = 29,830.87
  5. Step 5: Solve for x
    x = 29,830.87/145.44
  6. Step 6: Final answer
    x = 205.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.