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Finding the Fourth Proportional to 48.60, 66.47 and 48.33

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Solution

The fourth proportional to 48.60, 66.47 and 48.33 is: 66.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.60 : 66.47 = 48.33 : x
  2. Step 2: Convert to fraction form
    48.60/66.47 = 48.33/x
  3. Step 3: Cross multiply
    48.60x = 66.47 × 48.33
  4. Step 4: Simplify right side
    48.60x = 3,212.25
  5. Step 5: Solve for x
    x = 3,212.25/48.60
  6. Step 6: Final answer
    x = 66.10

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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.