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Finding the Fourth Proportional to 141.21, 211.71 and 60.07

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Solution

The fourth proportional to 141.21, 211.71 and 60.07 is: 90.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.21 : 211.71 = 60.07 : x
  2. Step 2: Convert to fraction form
    141.21/211.71 = 60.07/x
  3. Step 3: Cross multiply
    141.21x = 211.71 × 60.07
  4. Step 4: Simplify right side
    141.21x = 12,717.42
  5. Step 5: Solve for x
    x = 12,717.42/141.21
  6. Step 6: Final answer
    x = 90.06

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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.