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Finding the Fourth Proportional to 294.84, 442.07 and 140.69

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Solution

The fourth proportional to 294.84, 442.07 and 140.69 is: 210.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.84 : 442.07 = 140.69 : x
  2. Step 2: Convert to fraction form
    294.84/442.07 = 140.69/x
  3. Step 3: Cross multiply
    294.84x = 442.07 × 140.69
  4. Step 4: Simplify right side
    294.84x = 62,192.97
  5. Step 5: Solve for x
    x = 62,192.97/294.84
  6. Step 6: Final answer
    x = 210.94

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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.