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Finding the Fourth Proportional to 568.32, 855.59 and 519.87

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Solution

The fourth proportional to 568.32, 855.59 and 519.87 is: 782.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.32 : 855.59 = 519.87 : x
  2. Step 2: Convert to fraction form
    568.32/855.59 = 519.87/x
  3. Step 3: Cross multiply
    568.32x = 855.59 × 519.87
  4. Step 4: Simplify right side
    568.32x = 444,792.83
  5. Step 5: Solve for x
    x = 444,792.83/568.32
  6. Step 6: Final answer
    x = 782.65

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.