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Finding the Fourth Proportional to 147.82, 220.53 and 140.94

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Solution

The fourth proportional to 147.82, 220.53 and 140.94 is: 210.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.82 : 220.53 = 140.94 : x
  2. Step 2: Convert to fraction form
    147.82/220.53 = 140.94/x
  3. Step 3: Cross multiply
    147.82x = 220.53 × 140.94
  4. Step 4: Simplify right side
    147.82x = 31,080.79
  5. Step 5: Solve for x
    x = 31,080.79/147.82
  6. Step 6: Final answer
    x = 210.26

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Why These Related Problems?

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