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Finding the Fourth Proportional to 147.33, 220.16 and 143.91

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Solution

The fourth proportional to 147.33, 220.16 and 143.91 is: 215.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.33 : 220.16 = 143.91 : x
  2. Step 2: Convert to fraction form
    147.33/220.16 = 143.91/x
  3. Step 3: Cross multiply
    147.33x = 220.16 × 143.91
  4. Step 4: Simplify right side
    147.33x = 31,683.59
  5. Step 5: Solve for x
    x = 31,683.59/147.33
  6. Step 6: Final answer
    x = 215.05

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These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.