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Finding the Fourth Proportional to 141.68, 212.70 and 101

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Solution

The fourth proportional to 141.68, 212.70 and 101 is: 151.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.68 : 212.70 = 101 : x
  2. Step 2: Convert to fraction form
    141.68/212.70 = 101/x
  3. Step 3: Cross multiply
    141.68x = 212.70 × 101
  4. Step 4: Simplify right side
    141.68x = 21,482.70
  5. Step 5: Solve for x
    x = 21,482.70/141.68
  6. Step 6: Final answer
    x = 151.63

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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.