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Finding the Fourth Proportional to 294.41, 439.89 and 284.20

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Solution

The fourth proportional to 294.41, 439.89 and 284.20 is: 424.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.41 : 439.89 = 284.20 : x
  2. Step 2: Convert to fraction form
    294.41/439.89 = 284.20/x
  3. Step 3: Cross multiply
    294.41x = 439.89 × 284.20
  4. Step 4: Simplify right side
    294.41x = 125,016.70
  5. Step 5: Solve for x
    x = 125,016.70/294.41
  6. Step 6: Final answer
    x = 424.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.