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Finding the Fourth Proportional to 866.99, 1,195.24 and 586.78

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Solution

The fourth proportional to 866.99, 1,195.24 and 586.78 is: 808.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    866.99 : 1,195.24 = 586.78 : x
  2. Step 2: Convert to fraction form
    866.99/1,195.24 = 586.78/x
  3. Step 3: Cross multiply
    866.99x = 1,195.24 × 586.78
  4. Step 4: Simplify right side
    866.99x = 701,342.93
  5. Step 5: Solve for x
    x = 701,342.93/866.99
  6. Step 6: Final answer
    x = 808.94

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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.