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Finding the Fourth Proportional to 823.74, 1,136.74 and 529

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Solution

The fourth proportional to 823.74, 1,136.74 and 529 is: 730.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    823.74 : 1,136.74 = 529 : x
  2. Step 2: Convert to fraction form
    823.74/1,136.74 = 529/x
  3. Step 3: Cross multiply
    823.74x = 1,136.74 × 529
  4. Step 4: Simplify right side
    823.74x = 601,335.46
  5. Step 5: Solve for x
    x = 601,335.46/823.74
  6. Step 6: Final answer
    x = 730.01

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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.