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Finding the Fourth Proportional to 49, 73.51 and 18.59

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Solution

The fourth proportional to 49, 73.51 and 18.59 is: 27.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    49 : 73.51 = 18.59 : x
  2. Step 2: Convert to fraction form
    49/73.51 = 18.59/x
  3. Step 3: Cross multiply
    49x = 73.51 × 18.59
  4. Step 4: Simplify right side
    49x = 1,366.55
  5. Step 5: Solve for x
    x = 1,366.55/49
  6. Step 6: Final answer
    x = 27.89

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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.