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Finding the Fourth Proportional to 141.15, 211.81 and 64.11

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Solution

The fourth proportional to 141.15, 211.81 and 64.11 is: 96.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.15 : 211.81 = 64.11 : x
  2. Step 2: Convert to fraction form
    141.15/211.81 = 64.11/x
  3. Step 3: Cross multiply
    141.15x = 211.81 × 64.11
  4. Step 4: Simplify right side
    141.15x = 13,579.14
  5. Step 5: Solve for x
    x = 13,579.14/141.15
  6. Step 6: Final answer
    x = 96.20

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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.