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Finding the Fourth Proportional to 212.06, 292.56 and 133.35

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Solution

The fourth proportional to 212.06, 292.56 and 133.35 is: 183.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    212.06 : 292.56 = 133.35 : x
  2. Step 2: Convert to fraction form
    212.06/292.56 = 133.35/x
  3. Step 3: Cross multiply
    212.06x = 292.56 × 133.35
  4. Step 4: Simplify right side
    212.06x = 39,012.88
  5. Step 5: Solve for x
    x = 39,012.88/212.06
  6. Step 6: Final answer
    x = 183.98

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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.