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Finding the Fourth Proportional to 551.87, 828.71 and 528.17

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Solution

The fourth proportional to 551.87, 828.71 and 528.17 is: 793.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    551.87 : 828.71 = 528.17 : x
  2. Step 2: Convert to fraction form
    551.87/828.71 = 528.17/x
  3. Step 3: Cross multiply
    551.87x = 828.71 × 528.17
  4. Step 4: Simplify right side
    551.87x = 437,703.15
  5. Step 5: Solve for x
    x = 437,703.15/551.87
  6. Step 6: Final answer
    x = 793.13

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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.