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Finding the Fourth Proportional to 498, 746.38 and 266.32

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Solution

The fourth proportional to 498, 746.38 and 266.32 is: 399.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    498 : 746.38 = 266.32 : x
  2. Step 2: Convert to fraction form
    498/746.38 = 266.32/x
  3. Step 3: Cross multiply
    498x = 746.38 × 266.32
  4. Step 4: Simplify right side
    498x = 198,770.86
  5. Step 5: Solve for x
    x = 198,770.86/498
  6. Step 6: Final answer
    x = 399.14

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.