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Finding the Fourth Proportional to 58.05, 79.99 and 54

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Solution

The fourth proportional to 58.05, 79.99 and 54 is: 74.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    58.05 : 79.99 = 54 : x
  2. Step 2: Convert to fraction form
    58.05/79.99 = 54/x
  3. Step 3: Cross multiply
    58.05x = 79.99 × 54
  4. Step 4: Simplify right side
    58.05x = 4,319.33
  5. Step 5: Solve for x
    x = 4,319.33/58.05
  6. Step 6: Final answer
    x = 74.41

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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.