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Finding the Fourth Proportional to 242.91, 364.21 and 104.02

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Solution

The fourth proportional to 242.91, 364.21 and 104.02 is: 155.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.91 : 364.21 = 104.02 : x
  2. Step 2: Convert to fraction form
    242.91/364.21 = 104.02/x
  3. Step 3: Cross multiply
    242.91x = 364.21 × 104.02
  4. Step 4: Simplify right side
    242.91x = 37,885.12
  5. Step 5: Solve for x
    x = 37,885.12/242.91
  6. Step 6: Final answer
    x = 155.96

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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.