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Finding the Fourth Proportional to 294.99, 442.09 and 121.60

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Solution

The fourth proportional to 294.99, 442.09 and 121.60 is: 182.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.99 : 442.09 = 121.60 : x
  2. Step 2: Convert to fraction form
    294.99/442.09 = 121.60/x
  3. Step 3: Cross multiply
    294.99x = 442.09 × 121.60
  4. Step 4: Simplify right side
    294.99x = 53,758.14
  5. Step 5: Solve for x
    x = 53,758.14/294.99
  6. Step 6: Final answer
    x = 182.24

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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.