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Finding the Fourth Proportional to 320.03, 480.05 and 211.04

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Solution

The fourth proportional to 320.03, 480.05 and 211.04 is: 316.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    320.03 : 480.05 = 211.04 : x
  2. Step 2: Convert to fraction form
    320.03/480.05 = 211.04/x
  3. Step 3: Cross multiply
    320.03x = 480.05 × 211.04
  4. Step 4: Simplify right side
    320.03x = 101,312.78
  5. Step 5: Solve for x
    x = 101,312.78/320.03
  6. Step 6: Final answer
    x = 316.57

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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.