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Finding the Fourth Proportional to 51.27, 70.10 and 49.38

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Solution

The fourth proportional to 51.27, 70.10 and 49.38 is: 67.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    51.27 : 70.10 = 49.38 : x
  2. Step 2: Convert to fraction form
    51.27/70.10 = 49.38/x
  3. Step 3: Cross multiply
    51.27x = 70.10 × 49.38
  4. Step 4: Simplify right side
    51.27x = 3,461.54
  5. Step 5: Solve for x
    x = 3,461.54/51.27
  6. Step 6: Final answer
    x = 67.52

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.