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Finding the Fourth Proportional to 568.49, 784.38 and 347.25

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Solution

The fourth proportional to 568.49, 784.38 and 347.25 is: 479.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.49 : 784.38 = 347.25 : x
  2. Step 2: Convert to fraction form
    568.49/784.38 = 347.25/x
  3. Step 3: Cross multiply
    568.49x = 784.38 × 347.25
  4. Step 4: Simplify right side
    568.49x = 272,380.20
  5. Step 5: Solve for x
    x = 272,380.20/568.49
  6. Step 6: Final answer
    x = 479.13

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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.