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Finding the Fourth Proportional to 559.65, 775.59 and 551.82

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Solution

The fourth proportional to 559.65, 775.59 and 551.82 is: 764.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.65 : 775.59 = 551.82 : x
  2. Step 2: Convert to fraction form
    559.65/775.59 = 551.82/x
  3. Step 3: Cross multiply
    559.65x = 775.59 × 551.82
  4. Step 4: Simplify right side
    559.65x = 427,986.07
  5. Step 5: Solve for x
    x = 427,986.07/559.65
  6. Step 6: Final answer
    x = 764.74

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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.