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Finding the Fourth Proportional to 94.23, 141.26 and 42.84

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Solution

The fourth proportional to 94.23, 141.26 and 42.84 is: 64.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    94.23 : 141.26 = 42.84 : x
  2. Step 2: Convert to fraction form
    94.23/141.26 = 42.84/x
  3. Step 3: Cross multiply
    94.23x = 141.26 × 42.84
  4. Step 4: Simplify right side
    94.23x = 6,051.36
  5. Step 5: Solve for x
    x = 6,051.36/94.23
  6. Step 6: Final answer
    x = 64.22

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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.