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Finding the Fourth Proportional to 559.15, 774.90 and 551.32

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Solution

The fourth proportional to 559.15, 774.90 and 551.32 is: 764.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.15 : 774.90 = 551.32 : x
  2. Step 2: Convert to fraction form
    559.15/774.90 = 551.32/x
  3. Step 3: Cross multiply
    559.15x = 774.90 × 551.32
  4. Step 4: Simplify right side
    559.15x = 427,215.11
  5. Step 5: Solve for x
    x = 427,215.11/559.15
  6. Step 6: Final answer
    x = 764.04

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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.