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Finding the Fourth Proportional to 488.48, 732.16 and 343.68

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Solution

The fourth proportional to 488.48, 732.16 and 343.68 is: 515.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    488.48 : 732.16 = 343.68 : x
  2. Step 2: Convert to fraction form
    488.48/732.16 = 343.68/x
  3. Step 3: Cross multiply
    488.48x = 732.16 × 343.68
  4. Step 4: Simplify right side
    488.48x = 251,628.75
  5. Step 5: Solve for x
    x = 251,628.75/488.48
  6. Step 6: Final answer
    x = 515.13

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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.