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Finding the Fourth Proportional to 141.06, 211.55 and 49.74

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Solution

The fourth proportional to 141.06, 211.55 and 49.74 is: 74.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.06 : 211.55 = 49.74 : x
  2. Step 2: Convert to fraction form
    141.06/211.55 = 49.74/x
  3. Step 3: Cross multiply
    141.06x = 211.55 × 49.74
  4. Step 4: Simplify right side
    141.06x = 10,522.25
  5. Step 5: Solve for x
    x = 10,522.25/141.06
  6. Step 6: Final answer
    x = 74.59

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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.