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Finding the Fourth Proportional to 146.33, 220.65 and 143.59

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Solution

The fourth proportional to 146.33, 220.65 and 143.59 is: 216.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.33 : 220.65 = 143.59 : x
  2. Step 2: Convert to fraction form
    146.33/220.65 = 143.59/x
  3. Step 3: Cross multiply
    146.33x = 220.65 × 143.59
  4. Step 4: Simplify right side
    146.33x = 31,683.13
  5. Step 5: Solve for x
    x = 31,683.13/146.33
  6. Step 6: Final answer
    x = 216.52

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.