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Finding the Fourth Proportional to 212.50, 292.20 and 206.01

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Solution

The fourth proportional to 212.50, 292.20 and 206.01 is: 283.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    212.50 : 292.20 = 206.01 : x
  2. Step 2: Convert to fraction form
    212.50/292.20 = 206.01/x
  3. Step 3: Cross multiply
    212.50x = 292.20 × 206.01
  4. Step 4: Simplify right side
    212.50x = 60,196.12
  5. Step 5: Solve for x
    x = 60,196.12/212.50
  6. Step 6: Final answer
    x = 283.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.