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Finding the Fourth Proportional to 59.81, 82.52 and 51.05

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Solution

The fourth proportional to 59.81, 82.52 and 51.05 is: 70.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.81 : 82.52 = 51.05 : x
  2. Step 2: Convert to fraction form
    59.81/82.52 = 51.05/x
  3. Step 3: Cross multiply
    59.81x = 82.52 × 51.05
  4. Step 4: Simplify right side
    59.81x = 4,212.32
  5. Step 5: Solve for x
    x = 4,212.32/59.81
  6. Step 6: Final answer
    x = 70.43

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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.