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Finding the Fourth Proportional to 68.99, 95.12 and 52.59

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Solution

The fourth proportional to 68.99, 95.12 and 52.59 is: 72.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68.99 : 95.12 = 52.59 : x
  2. Step 2: Convert to fraction form
    68.99/95.12 = 52.59/x
  3. Step 3: Cross multiply
    68.99x = 95.12 × 52.59
  4. Step 4: Simplify right side
    68.99x = 5,002.36
  5. Step 5: Solve for x
    x = 5,002.36/68.99
  6. Step 6: Final answer
    x = 72.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.