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Finding the Fourth Proportional to 55.36, 76.37 and 35.71

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Solution

The fourth proportional to 55.36, 76.37 and 35.71 is: 49.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    55.36 : 76.37 = 35.71 : x
  2. Step 2: Convert to fraction form
    55.36/76.37 = 35.71/x
  3. Step 3: Cross multiply
    55.36x = 76.37 × 35.71
  4. Step 4: Simplify right side
    55.36x = 2,727.17
  5. Step 5: Solve for x
    x = 2,727.17/55.36
  6. Step 6: Final answer
    x = 49.26

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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.