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Finding the Fourth Proportional to 568.69, 784.71 and 347.71

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Solution

The fourth proportional to 568.69, 784.71 and 347.71 is: 479.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.69 : 784.71 = 347.71 : x
  2. Step 2: Convert to fraction form
    568.69/784.71 = 347.71/x
  3. Step 3: Cross multiply
    568.69x = 784.71 × 347.71
  4. Step 4: Simplify right side
    568.69x = 272,849.55
  5. Step 5: Solve for x
    x = 272,849.55/568.69
  6. Step 6: Final answer
    x = 479.79

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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.