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Finding the Fourth Proportional to 827.27, 1,141.74 and 528.63

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Solution

The fourth proportional to 827.27, 1,141.74 and 528.63 is: 729.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    827.27 : 1,141.74 = 528.63 : x
  2. Step 2: Convert to fraction form
    827.27/1,141.74 = 528.63/x
  3. Step 3: Cross multiply
    827.27x = 1,141.74 × 528.63
  4. Step 4: Simplify right side
    827.27x = 603,558.02
  5. Step 5: Solve for x
    x = 603,558.02/827.27
  6. Step 6: Final answer
    x = 729.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.