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Finding the Fourth Proportional to 140.32, 210.18 and 94.66

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Solution

The fourth proportional to 140.32, 210.18 and 94.66 is: 141.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.32 : 210.18 = 94.66 : x
  2. Step 2: Convert to fraction form
    140.32/210.18 = 94.66/x
  3. Step 3: Cross multiply
    140.32x = 210.18 × 94.66
  4. Step 4: Simplify right side
    140.32x = 19,895.64
  5. Step 5: Solve for x
    x = 19,895.64/140.32
  6. Step 6: Final answer
    x = 141.79

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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.