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Finding the Fourth Proportional to 320.06, 480.06 and 204.18

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Solution

The fourth proportional to 320.06, 480.06 and 204.18 is: 306.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.06 : 480.06 = 204.18 : x
  2. Step 2: Convert to fraction form
    320.06/480.06 = 204.18/x
  3. Step 3: Cross multiply
    320.06x = 480.06 × 204.18
  4. Step 4: Simplify right side
    320.06x = 98,018.65
  5. Step 5: Solve for x
    x = 98,018.65/320.06
  6. Step 6: Final answer
    x = 306.25

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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.