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Finding the Fourth Proportional to 20.04, 30.18 and 17.02

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Solution

The fourth proportional to 20.04, 30.18 and 17.02 is: 25.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20.04 : 30.18 = 17.02 : x
  2. Step 2: Convert to fraction form
    20.04/30.18 = 17.02/x
  3. Step 3: Cross multiply
    20.04x = 30.18 × 17.02
  4. Step 4: Simplify right side
    20.04x = 513.66
  5. Step 5: Solve for x
    x = 513.66/20.04
  6. Step 6: Final answer
    x = 25.63

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Find fourth proportional to 10.02, 15.09 and 8.51
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.