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Finding the Fourth Proportional to 55.42, 83.09 and 32.60

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Solution

The fourth proportional to 55.42, 83.09 and 32.60 is: 48.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.42 : 83.09 = 32.60 : x
  2. Step 2: Convert to fraction form
    55.42/83.09 = 32.60/x
  3. Step 3: Cross multiply
    55.42x = 83.09 × 32.60
  4. Step 4: Simplify right side
    55.42x = 2,709.02
  5. Step 5: Solve for x
    x = 2,709.02/55.42
  6. Step 6: Final answer
    x = 48.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.