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Finding the Fourth Proportional to 141.00, 212.73 and 140.62

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Solution

The fourth proportional to 141.00, 212.73 and 140.62 is: 212.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.00 : 212.73 = 140.62 : x
  2. Step 2: Convert to fraction form
    141.00/212.73 = 140.62/x
  3. Step 3: Cross multiply
    141.00x = 212.73 × 140.62
  4. Step 4: Simplify right side
    141.00x = 29,915.52
  5. Step 5: Solve for x
    x = 29,915.52/141.00
  6. Step 6: Final answer
    x = 212.16

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.