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Finding the Fourth Proportional to 147.93, 221.57 and 143.82

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Solution

The fourth proportional to 147.93, 221.57 and 143.82 is: 215.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.93 : 221.57 = 143.82 : x
  2. Step 2: Convert to fraction form
    147.93/221.57 = 143.82/x
  3. Step 3: Cross multiply
    147.93x = 221.57 × 143.82
  4. Step 4: Simplify right side
    147.93x = 31,865.48
  5. Step 5: Solve for x
    x = 31,865.48/147.93
  6. Step 6: Final answer
    x = 215.41

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