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Finding the Fourth Proportional to 48.60, 72.60 and 35.54

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Solution

The fourth proportional to 48.60, 72.60 and 35.54 is: 53.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.60 : 72.60 = 35.54 : x
  2. Step 2: Convert to fraction form
    48.60/72.60 = 35.54/x
  3. Step 3: Cross multiply
    48.60x = 72.60 × 35.54
  4. Step 4: Simplify right side
    48.60x = 2,579.98
  5. Step 5: Solve for x
    x = 2,579.98/48.60
  6. Step 6: Final answer
    x = 53.09

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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.