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Finding the Fourth Proportional to 145.69, 218.61 and 96.82

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Solution

The fourth proportional to 145.69, 218.61 and 96.82 is: 145.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    145.69 : 218.61 = 96.82 : x
  2. Step 2: Convert to fraction form
    145.69/218.61 = 96.82/x
  3. Step 3: Cross multiply
    145.69x = 218.61 × 96.82
  4. Step 4: Simplify right side
    145.69x = 21,164.24
  5. Step 5: Solve for x
    x = 21,164.24/145.69
  6. Step 6: Final answer
    x = 145.27

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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.