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Finding the Fourth Proportional to 488.98, 732.64 and 344.40

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Solution

The fourth proportional to 488.98, 732.64 and 344.40 is: 516.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.98 : 732.64 = 344.40 : x
  2. Step 2: Convert to fraction form
    488.98/732.64 = 344.40/x
  3. Step 3: Cross multiply
    488.98x = 732.64 × 344.40
  4. Step 4: Simplify right side
    488.98x = 252,321.22
  5. Step 5: Solve for x
    x = 252,321.22/488.98
  6. Step 6: Final answer
    x = 516.02

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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.