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Finding the Fourth Proportional to 242, 333.40 and 179.72

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Solution

The fourth proportional to 242, 333.40 and 179.72 is: 247.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    242 : 333.40 = 179.72 : x
  2. Step 2: Convert to fraction form
    242/333.40 = 179.72/x
  3. Step 3: Cross multiply
    242x = 333.40 × 179.72
  4. Step 4: Simplify right side
    242x = 59,918.65
  5. Step 5: Solve for x
    x = 59,918.65/242
  6. Step 6: Final answer
    x = 247.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.