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Finding the Fourth Proportional to 551.32, 825.75 and 477.22

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Solution

The fourth proportional to 551.32, 825.75 and 477.22 is: 714.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.32 : 825.75 = 477.22 : x
  2. Step 2: Convert to fraction form
    551.32/825.75 = 477.22/x
  3. Step 3: Cross multiply
    551.32x = 825.75 × 477.22
  4. Step 4: Simplify right side
    551.32x = 394,064.42
  5. Step 5: Solve for x
    x = 394,064.42/551.32
  6. Step 6: Final answer
    x = 714.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.