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Finding the Fourth Proportional to 122.34, 183.57 and 45.36

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Solution

The fourth proportional to 122.34, 183.57 and 45.36 is: 68.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.34 : 183.57 = 45.36 : x
  2. Step 2: Convert to fraction form
    122.34/183.57 = 45.36/x
  3. Step 3: Cross multiply
    122.34x = 183.57 × 45.36
  4. Step 4: Simplify right side
    122.34x = 8,326.74
  5. Step 5: Solve for x
    x = 8,326.74/122.34
  6. Step 6: Final answer
    x = 68.06

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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.