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Finding the Fourth Proportional to 56.22, 84.84 and 55.77

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Solution

The fourth proportional to 56.22, 84.84 and 55.77 is: 84.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    56.22 : 84.84 = 55.77 : x
  2. Step 2: Convert to fraction form
    56.22/84.84 = 55.77/x
  3. Step 3: Cross multiply
    56.22x = 84.84 × 55.77
  4. Step 4: Simplify right side
    56.22x = 4,731.53
  5. Step 5: Solve for x
    x = 4,731.53/56.22
  6. Step 6: Final answer
    x = 84.16

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.