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Finding the Fourth Proportional to 88.99, 122.77 and 54.03

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Solution

The fourth proportional to 88.99, 122.77 and 54.03 is: 74.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.99 : 122.77 = 54.03 : x
  2. Step 2: Convert to fraction form
    88.99/122.77 = 54.03/x
  3. Step 3: Cross multiply
    88.99x = 122.77 × 54.03
  4. Step 4: Simplify right side
    88.99x = 6,633.10
  5. Step 5: Solve for x
    x = 6,633.10/88.99
  6. Step 6: Final answer
    x = 74.54

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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.