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Finding the Fourth Proportional to 141.51, 212.16 and 60.30

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Solution

The fourth proportional to 141.51, 212.16 and 60.30 is: 90.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.51 : 212.16 = 60.30 : x
  2. Step 2: Convert to fraction form
    141.51/212.16 = 60.30/x
  3. Step 3: Cross multiply
    141.51x = 212.16 × 60.30
  4. Step 4: Simplify right side
    141.51x = 12,793.25
  5. Step 5: Solve for x
    x = 12,793.25/141.51
  6. Step 6: Final answer
    x = 90.41

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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.