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Finding the Fourth Proportional to 294.06, 440.90 and 139.98

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Solution

The fourth proportional to 294.06, 440.90 and 139.98 is: 209.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.06 : 440.90 = 139.98 : x
  2. Step 2: Convert to fraction form
    294.06/440.90 = 139.98/x
  3. Step 3: Cross multiply
    294.06x = 440.90 × 139.98
  4. Step 4: Simplify right side
    294.06x = 61,717.18
  5. Step 5: Solve for x
    x = 61,717.18/294.06
  6. Step 6: Final answer
    x = 209.88

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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.