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Finding the Fourth Proportional to 56.13, 84.14 and 36.91

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Solution

The fourth proportional to 56.13, 84.14 and 36.91 is: 55.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    56.13 : 84.14 = 36.91 : x
  2. Step 2: Convert to fraction form
    56.13/84.14 = 36.91/x
  3. Step 3: Cross multiply
    56.13x = 84.14 × 36.91
  4. Step 4: Simplify right side
    56.13x = 3,105.67
  5. Step 5: Solve for x
    x = 3,105.67/56.13
  6. Step 6: Final answer
    x = 55.33

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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.