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Finding the Fourth Proportional to 49.60, 73.83 and 49.15

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Solution

The fourth proportional to 49.60, 73.83 and 49.15 is: 73.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    49.60 : 73.83 = 49.15 : x
  2. Step 2: Convert to fraction form
    49.60/73.83 = 49.15/x
  3. Step 3: Cross multiply
    49.60x = 73.83 × 49.15
  4. Step 4: Simplify right side
    49.60x = 3,628.74
  5. Step 5: Solve for x
    x = 3,628.74/49.60
  6. Step 6: Final answer
    x = 73.16

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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.