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Finding the Fourth Proportional to 109.70, 164.60 and 51.94

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Solution

The fourth proportional to 109.70, 164.60 and 51.94 is: 77.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.70 : 164.60 = 51.94 : x
  2. Step 2: Convert to fraction form
    109.70/164.60 = 51.94/x
  3. Step 3: Cross multiply
    109.70x = 164.60 × 51.94
  4. Step 4: Simplify right side
    109.70x = 8,549.46
  5. Step 5: Solve for x
    x = 8,549.46/109.70
  6. Step 6: Final answer
    x = 77.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.