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Finding the Fourth Proportional to 48.75, 73.08 and 48.35

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Solution

The fourth proportional to 48.75, 73.08 and 48.35 is: 72.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    48.75 : 73.08 = 48.35 : x
  2. Step 2: Convert to fraction form
    48.75/73.08 = 48.35/x
  3. Step 3: Cross multiply
    48.75x = 73.08 × 48.35
  4. Step 4: Simplify right side
    48.75x = 3,533.05
  5. Step 5: Solve for x
    x = 3,533.05/48.75
  6. Step 6: Final answer
    x = 72.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.