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Finding the Fourth Proportional to 492.85, 680.13 and 296.32

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Solution

The fourth proportional to 492.85, 680.13 and 296.32 is: 408.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    492.85 : 680.13 = 296.32 : x
  2. Step 2: Convert to fraction form
    492.85/680.13 = 296.32/x
  3. Step 3: Cross multiply
    492.85x = 680.13 × 296.32
  4. Step 4: Simplify right side
    492.85x = 201,538.08
  5. Step 5: Solve for x
    x = 201,538.08/492.85
  6. Step 6: Final answer
    x = 408.93

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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.