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Finding the Fourth Proportional to 82.34, 113.61 and 47.37

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Solution

The fourth proportional to 82.34, 113.61 and 47.37 is: 65.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    82.34 : 113.61 = 47.37 : x
  2. Step 2: Convert to fraction form
    82.34/113.61 = 47.37/x
  3. Step 3: Cross multiply
    82.34x = 113.61 × 47.37
  4. Step 4: Simplify right side
    82.34x = 5,381.71
  5. Step 5: Solve for x
    x = 5,381.71/82.34
  6. Step 6: Final answer
    x = 65.36

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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.