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Finding the Fourth Proportional to 320.13, 479.91 and 204.24

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Solution

The fourth proportional to 320.13, 479.91 and 204.24 is: 306.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.13 : 479.91 = 204.24 : x
  2. Step 2: Convert to fraction form
    320.13/479.91 = 204.24/x
  3. Step 3: Cross multiply
    320.13x = 479.91 × 204.24
  4. Step 4: Simplify right side
    320.13x = 98,016.82
  5. Step 5: Solve for x
    x = 98,016.82/320.13
  6. Step 6: Final answer
    x = 306.18

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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.