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Finding the Fourth Proportional to 212.01, 292.36 and 142.08

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Solution

The fourth proportional to 212.01, 292.36 and 142.08 is: 195.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    212.01 : 292.36 = 142.08 : x
  2. Step 2: Convert to fraction form
    212.01/292.36 = 142.08/x
  3. Step 3: Cross multiply
    212.01x = 292.36 × 142.08
  4. Step 4: Simplify right side
    212.01x = 41,538.51
  5. Step 5: Solve for x
    x = 41,538.51/212.01
  6. Step 6: Final answer
    x = 195.93

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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.