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Finding the Fourth Proportional to 568.17, 783.90 and 347.22

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Solution

The fourth proportional to 568.17, 783.90 and 347.22 is: 479.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.17 : 783.90 = 347.22 : x
  2. Step 2: Convert to fraction form
    568.17/783.90 = 347.22/x
  3. Step 3: Cross multiply
    568.17x = 783.90 × 347.22
  4. Step 4: Simplify right side
    568.17x = 272,185.76
  5. Step 5: Solve for x
    x = 272,185.76/568.17
  6. Step 6: Final answer
    x = 479.06

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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.