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Finding the Fourth Proportional to 482.57, 723.86 and 320.57

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Solution

The fourth proportional to 482.57, 723.86 and 320.57 is: 480.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    482.57 : 723.86 = 320.57 : x
  2. Step 2: Convert to fraction form
    482.57/723.86 = 320.57/x
  3. Step 3: Cross multiply
    482.57x = 723.86 × 320.57
  4. Step 4: Simplify right side
    482.57x = 232,046.20
  5. Step 5: Solve for x
    x = 232,046.20/482.57
  6. Step 6: Final answer
    x = 480.86

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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.