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Finding the Fourth Proportional to 58.88, 87.81 and 54.83

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Solution

The fourth proportional to 58.88, 87.81 and 54.83 is: 81.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.88 : 87.81 = 54.83 : x
  2. Step 2: Convert to fraction form
    58.88/87.81 = 54.83/x
  3. Step 3: Cross multiply
    58.88x = 87.81 × 54.83
  4. Step 4: Simplify right side
    58.88x = 4,814.62
  5. Step 5: Solve for x
    x = 4,814.62/58.88
  6. Step 6: Final answer
    x = 81.77

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.