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Finding the Fourth Proportional to 140.09, 209.90 and 62.93

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Solution

The fourth proportional to 140.09, 209.90 and 62.93 is: 94.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.09 : 209.90 = 62.93 : x
  2. Step 2: Convert to fraction form
    140.09/209.90 = 62.93/x
  3. Step 3: Cross multiply
    140.09x = 209.90 × 62.93
  4. Step 4: Simplify right side
    140.09x = 13,209.69
  5. Step 5: Solve for x
    x = 13,209.69/140.09
  6. Step 6: Final answer
    x = 94.30

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.