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Finding the Fourth Proportional to 573.20, 858.86 and 329.30

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Solution

The fourth proportional to 573.20, 858.86 and 329.30 is: 493.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.20 : 858.86 = 329.30 : x
  2. Step 2: Convert to fraction form
    573.20/858.86 = 329.30/x
  3. Step 3: Cross multiply
    573.20x = 858.86 × 329.30
  4. Step 4: Simplify right side
    573.20x = 282,820.95
  5. Step 5: Solve for x
    x = 282,820.95/573.20
  6. Step 6: Final answer
    x = 493.41

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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.