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Finding the Fourth Proportional to 497.68, 746.58 and 209.20

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Solution

The fourth proportional to 497.68, 746.58 and 209.20 is: 313.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    497.68 : 746.58 = 209.20 : x
  2. Step 2: Convert to fraction form
    497.68/746.58 = 209.20/x
  3. Step 3: Cross multiply
    497.68x = 746.58 × 209.20
  4. Step 4: Simplify right side
    497.68x = 156,184.54
  5. Step 5: Solve for x
    x = 156,184.54/497.68
  6. Step 6: Final answer
    x = 313.83

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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.