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Finding the Fourth Proportional to 579.47, 794.30 and 571.68

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Solution

The fourth proportional to 579.47, 794.30 and 571.68 is: 783.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.47 : 794.30 = 571.68 : x
  2. Step 2: Convert to fraction form
    579.47/794.30 = 571.68/x
  3. Step 3: Cross multiply
    579.47x = 794.30 × 571.68
  4. Step 4: Simplify right side
    579.47x = 454,089.83
  5. Step 5: Solve for x
    x = 454,089.83/579.47
  6. Step 6: Final answer
    x = 783.63

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.