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Finding the Fourth Proportional to 38.99, 58.50 and 16.15

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Solution

The fourth proportional to 38.99, 58.50 and 16.15 is: 24.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    38.99 : 58.50 = 16.15 : x
  2. Step 2: Convert to fraction form
    38.99/58.50 = 16.15/x
  3. Step 3: Cross multiply
    38.99x = 58.50 × 16.15
  4. Step 4: Simplify right side
    38.99x = 944.85
  5. Step 5: Solve for x
    x = 944.85/38.99
  6. Step 6: Final answer
    x = 24.23

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1.5x scale

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.