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Finding the Fourth Proportional to 572.94, 857.74 and 518.23

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Solution

The fourth proportional to 572.94, 857.74 and 518.23 is: 775.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    572.94 : 857.74 = 518.23 : x
  2. Step 2: Convert to fraction form
    572.94/857.74 = 518.23/x
  3. Step 3: Cross multiply
    572.94x = 857.74 × 518.23
  4. Step 4: Simplify right side
    572.94x = 444,501.02
  5. Step 5: Solve for x
    x = 444,501.02/572.94
  6. Step 6: Final answer
    x = 775.82

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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.