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Finding the Fourth Proportional to 140, 209.93 and 63.04

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Solution

The fourth proportional to 140, 209.93 and 63.04 is: 94.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    140 : 209.93 = 63.04 : x
  2. Step 2: Convert to fraction form
    140/209.93 = 63.04/x
  3. Step 3: Cross multiply
    140x = 209.93 × 63.04
  4. Step 4: Simplify right side
    140x = 13,233.67
  5. Step 5: Solve for x
    x = 13,233.67/140
  6. Step 6: Final answer
    x = 94.53

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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.