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Finding the Fourth Proportional to 155.10, 213.92 and 134.12

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Solution

The fourth proportional to 155.10, 213.92 and 134.12 is: 184.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.10 : 213.92 = 134.12 : x
  2. Step 2: Convert to fraction form
    155.10/213.92 = 134.12/x
  3. Step 3: Cross multiply
    155.10x = 213.92 × 134.12
  4. Step 4: Simplify right side
    155.10x = 28,690.95
  5. Step 5: Solve for x
    x = 28,690.95/155.10
  6. Step 6: Final answer
    x = 184.98

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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.