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Finding the Fourth Proportional to 184.21, 253.88 and 140.65

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Solution

The fourth proportional to 184.21, 253.88 and 140.65 is: 193.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.21 : 253.88 = 140.65 : x
  2. Step 2: Convert to fraction form
    184.21/253.88 = 140.65/x
  3. Step 3: Cross multiply
    184.21x = 253.88 × 140.65
  4. Step 4: Simplify right side
    184.21x = 35,707.52
  5. Step 5: Solve for x
    x = 35,707.52/184.21
  6. Step 6: Final answer
    x = 193.84

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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.