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Finding the Fourth Proportional to 51.32, 77.27 and 47.14

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Solution

The fourth proportional to 51.32, 77.27 and 47.14 is: 70.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.32 : 77.27 = 47.14 : x
  2. Step 2: Convert to fraction form
    51.32/77.27 = 47.14/x
  3. Step 3: Cross multiply
    51.32x = 77.27 × 47.14
  4. Step 4: Simplify right side
    51.32x = 3,642.08
  5. Step 5: Solve for x
    x = 3,642.08/51.32
  6. Step 6: Final answer
    x = 70.96

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.