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Finding the Fourth Proportional to 134.21, 184.36 and 115.53

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Solution

The fourth proportional to 134.21, 184.36 and 115.53 is: 158.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    134.21 : 184.36 = 115.53 : x
  2. Step 2: Convert to fraction form
    134.21/184.36 = 115.53/x
  3. Step 3: Cross multiply
    134.21x = 184.36 × 115.53
  4. Step 4: Simplify right side
    134.21x = 21,298.35
  5. Step 5: Solve for x
    x = 21,298.35/134.21
  6. Step 6: Final answer
    x = 158.70

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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.