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Finding the Fourth Proportional to 242.91, 364.30 and 69.53

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Solution

The fourth proportional to 242.91, 364.30 and 69.53 is: 104.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    242.91 : 364.30 = 69.53 : x
  2. Step 2: Convert to fraction form
    242.91/364.30 = 69.53/x
  3. Step 3: Cross multiply
    242.91x = 364.30 × 69.53
  4. Step 4: Simplify right side
    242.91x = 25,327.78
  5. Step 5: Solve for x
    x = 25,327.78/242.91
  6. Step 6: Final answer
    x = 104.27

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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.