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Finding the Fourth Proportional to 568.41, 784.54 and 347.54

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Solution

The fourth proportional to 568.41, 784.54 and 347.54 is: 479.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.41 : 784.54 = 347.54 : x
  2. Step 2: Convert to fraction form
    568.41/784.54 = 347.54/x
  3. Step 3: Cross multiply
    568.41x = 784.54 × 347.54
  4. Step 4: Simplify right side
    568.41x = 272,662.16
  5. Step 5: Solve for x
    x = 272,662.16/568.41
  6. Step 6: Final answer
    x = 479.70

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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.