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Finding the Fourth Proportional to 51.22, 70.76 and 41.36

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Solution

The fourth proportional to 51.22, 70.76 and 41.36 is: 57.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.22 : 70.76 = 41.36 : x
  2. Step 2: Convert to fraction form
    51.22/70.76 = 41.36/x
  3. Step 3: Cross multiply
    51.22x = 70.76 × 41.36
  4. Step 4: Simplify right side
    51.22x = 2,926.43
  5. Step 5: Solve for x
    x = 2,926.43/51.22
  6. Step 6: Final answer
    x = 57.14

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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.