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Finding the Fourth Proportional to 59.99, 82.78 and 34.11

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Solution

The fourth proportional to 59.99, 82.78 and 34.11 is: 47.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.99 : 82.78 = 34.11 : x
  2. Step 2: Convert to fraction form
    59.99/82.78 = 34.11/x
  3. Step 3: Cross multiply
    59.99x = 82.78 × 34.11
  4. Step 4: Simplify right side
    59.99x = 2,823.63
  5. Step 5: Solve for x
    x = 2,823.63/59.99
  6. Step 6: Final answer
    x = 47.07

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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.