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Finding the Fourth Proportional to 568, 783.36 and 521.44

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Solution

The fourth proportional to 568, 783.36 and 521.44 is: 719.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    568 : 783.36 = 521.44 : x
  2. Step 2: Convert to fraction form
    568/783.36 = 521.44/x
  3. Step 3: Cross multiply
    568x = 783.36 × 521.44
  4. Step 4: Simplify right side
    568x = 408,475.24
  5. Step 5: Solve for x
    x = 408,475.24/568
  6. Step 6: Final answer
    x = 719.15

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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.