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Finding the Fourth Proportional to 48.52, 67.28 and 47.02

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Solution

The fourth proportional to 48.52, 67.28 and 47.02 is: 65.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.52 : 67.28 = 47.02 : x
  2. Step 2: Convert to fraction form
    48.52/67.28 = 47.02/x
  3. Step 3: Cross multiply
    48.52x = 67.28 × 47.02
  4. Step 4: Simplify right side
    48.52x = 3,163.51
  5. Step 5: Solve for x
    x = 3,163.51/48.52
  6. Step 6: Final answer
    x = 65.20

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.