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Finding the Fourth Proportional to 145.41, 218.08 and 73.26

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Solution

The fourth proportional to 145.41, 218.08 and 73.26 is: 109.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.41 : 218.08 = 73.26 : x
  2. Step 2: Convert to fraction form
    145.41/218.08 = 73.26/x
  3. Step 3: Cross multiply
    145.41x = 218.08 × 73.26
  4. Step 4: Simplify right side
    145.41x = 15,976.54
  5. Step 5: Solve for x
    x = 15,976.54/145.41
  6. Step 6: Final answer
    x = 109.87

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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.