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Finding the Fourth Proportional to 51.68, 77.25 and 36.36

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Solution

The fourth proportional to 51.68, 77.25 and 36.36 is: 54.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.68 : 77.25 = 36.36 : x
  2. Step 2: Convert to fraction form
    51.68/77.25 = 36.36/x
  3. Step 3: Cross multiply
    51.68x = 77.25 × 36.36
  4. Step 4: Simplify right side
    51.68x = 2,808.81
  5. Step 5: Solve for x
    x = 2,808.81/51.68
  6. Step 6: Final answer
    x = 54.35

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.