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Finding the Fourth Proportional to 55.41, 83.14 and 19.35

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Solution

The fourth proportional to 55.41, 83.14 and 19.35 is: 29.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.41 : 83.14 = 19.35 : x
  2. Step 2: Convert to fraction form
    55.41/83.14 = 19.35/x
  3. Step 3: Cross multiply
    55.41x = 83.14 × 19.35
  4. Step 4: Simplify right side
    55.41x = 1,608.25
  5. Step 5: Solve for x
    x = 1,608.25/55.41
  6. Step 6: Final answer
    x = 29.02

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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.