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Finding the Fourth Proportional to 53.56, 73.92 and 34.16

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Solution

The fourth proportional to 53.56, 73.92 and 34.16 is: 47.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    53.56 : 73.92 = 34.16 : x
  2. Step 2: Convert to fraction form
    53.56/73.92 = 34.16/x
  3. Step 3: Cross multiply
    53.56x = 73.92 × 34.16
  4. Step 4: Simplify right side
    53.56x = 2,525.11
  5. Step 5: Solve for x
    x = 2,525.11/53.56
  6. Step 6: Final answer
    x = 47.15

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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.