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Finding the Fourth Proportional to 568.64, 788.03 and 561.68

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Solution

The fourth proportional to 568.64, 788.03 and 561.68 is: 778.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    568.64 : 788.03 = 561.68 : x
  2. Step 2: Convert to fraction form
    568.64/788.03 = 561.68/x
  3. Step 3: Cross multiply
    568.64x = 788.03 × 561.68
  4. Step 4: Simplify right side
    568.64x = 442,620.69
  5. Step 5: Solve for x
    x = 442,620.69/568.64
  6. Step 6: Final answer
    x = 778.38

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.