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Finding the Fourth Proportional to 18.48, 27.56 and 18

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Solution

The fourth proportional to 18.48, 27.56 and 18 is: 26.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18.48 : 27.56 = 18 : x
  2. Step 2: Convert to fraction form
    18.48/27.56 = 18/x
  3. Step 3: Cross multiply
    18.48x = 27.56 × 18
  4. Step 4: Simplify right side
    18.48x = 496.08
  5. Step 5: Solve for x
    x = 496.08/18.48
  6. Step 6: Final answer
    x = 26.84

Related Problems

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.