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Finding the Fourth Proportional to 147.77, 203.82 and 142.94

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Solution

The fourth proportional to 147.77, 203.82 and 142.94 is: 197.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    147.77 : 203.82 = 142.94 : x
  2. Step 2: Convert to fraction form
    147.77/203.82 = 142.94/x
  3. Step 3: Cross multiply
    147.77x = 203.82 × 142.94
  4. Step 4: Simplify right side
    147.77x = 29,133.32
  5. Step 5: Solve for x
    x = 29,133.32/147.77
  6. Step 6: Final answer
    x = 197.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.