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Finding the Fourth Proportional to 492.65, 738.67 and 210.88

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Solution

The fourth proportional to 492.65, 738.67 and 210.88 is: 316.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.65 : 738.67 = 210.88 : x
  2. Step 2: Convert to fraction form
    492.65/738.67 = 210.88/x
  3. Step 3: Cross multiply
    492.65x = 738.67 × 210.88
  4. Step 4: Simplify right side
    492.65x = 155,770.73
  5. Step 5: Solve for x
    x = 155,770.73/492.65
  6. Step 6: Final answer
    x = 316.19

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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.