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Finding the Fourth Proportional to 145.97, 218.64 and 107.52

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Solution

The fourth proportional to 145.97, 218.64 and 107.52 is: 161.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.97 : 218.64 = 107.52 : x
  2. Step 2: Convert to fraction form
    145.97/218.64 = 107.52/x
  3. Step 3: Cross multiply
    145.97x = 218.64 × 107.52
  4. Step 4: Simplify right side
    145.97x = 23,507.76
  5. Step 5: Solve for x
    x = 23,507.76/145.97
  6. Step 6: Final answer
    x = 161.05

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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.