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Finding the Fourth Proportional to 52.50, 79.18 and 50.12

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Solution

The fourth proportional to 52.50, 79.18 and 50.12 is: 75.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    52.50 : 79.18 = 50.12 : x
  2. Step 2: Convert to fraction form
    52.50/79.18 = 50.12/x
  3. Step 3: Cross multiply
    52.50x = 79.18 × 50.12
  4. Step 4: Simplify right side
    52.50x = 3,968.28
  5. Step 5: Solve for x
    x = 3,968.28/52.50
  6. Step 6: Final answer
    x = 75.59

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.