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Finding the Fourth Proportional to 285.71, 393.89 and 244.08

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Solution

The fourth proportional to 285.71, 393.89 and 244.08 is: 336.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    285.71 : 393.89 = 244.08 : x
  2. Step 2: Convert to fraction form
    285.71/393.89 = 244.08/x
  3. Step 3: Cross multiply
    285.71x = 393.89 × 244.08
  4. Step 4: Simplify right side
    285.71x = 96,139.45
  5. Step 5: Solve for x
    x = 96,139.45/285.71
  6. Step 6: Final answer
    x = 336.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.