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Finding the Fourth Proportional to 59.99, 90.02 and 55.47

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Solution

The fourth proportional to 59.99, 90.02 and 55.47 is: 83.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    59.99 : 90.02 = 55.47 : x
  2. Step 2: Convert to fraction form
    59.99/90.02 = 55.47/x
  3. Step 3: Cross multiply
    59.99x = 90.02 × 55.47
  4. Step 4: Simplify right side
    59.99x = 4,992.68
  5. Step 5: Solve for x
    x = 4,992.68/59.99
  6. Step 6: Final answer
    x = 83.23

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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.