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Finding the Fourth Proportional to 140.83, 193.24 and 139.47

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Solution

The fourth proportional to 140.83, 193.24 and 139.47 is: 191.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.83 : 193.24 = 139.47 : x
  2. Step 2: Convert to fraction form
    140.83/193.24 = 139.47/x
  3. Step 3: Cross multiply
    140.83x = 193.24 × 139.47
  4. Step 4: Simplify right side
    140.83x = 26,950.63
  5. Step 5: Solve for x
    x = 26,950.63/140.83
  6. Step 6: Final answer
    x = 191.37

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.