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Finding the Fourth Proportional to 298.65, 412.13 and 180.73

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Solution

The fourth proportional to 298.65, 412.13 and 180.73 is: 249.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    298.65 : 412.13 = 180.73 : x
  2. Step 2: Convert to fraction form
    298.65/412.13 = 180.73/x
  3. Step 3: Cross multiply
    298.65x = 412.13 × 180.73
  4. Step 4: Simplify right side
    298.65x = 74,482.90
  5. Step 5: Solve for x
    x = 74,482.90/298.65
  6. Step 6: Final answer
    x = 249.40

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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.