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Finding the Fourth Proportional to 55.42, 83.25 and 37.42

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Solution

The fourth proportional to 55.42, 83.25 and 37.42 is: 56.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.42 : 83.25 = 37.42 : x
  2. Step 2: Convert to fraction form
    55.42/83.25 = 37.42/x
  3. Step 3: Cross multiply
    55.42x = 83.25 × 37.42
  4. Step 4: Simplify right side
    55.42x = 3,115.22
  5. Step 5: Solve for x
    x = 3,115.22/55.42
  6. Step 6: Final answer
    x = 56.21

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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.