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Finding the Fourth Proportional to 573.76, 858.72 and 548.80

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Solution

The fourth proportional to 573.76, 858.72 and 548.80 is: 821.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.76 : 858.72 = 548.80 : x
  2. Step 2: Convert to fraction form
    573.76/858.72 = 548.80/x
  3. Step 3: Cross multiply
    573.76x = 858.72 × 548.80
  4. Step 4: Simplify right side
    573.76x = 471,265.54
  5. Step 5: Solve for x
    x = 471,265.54/573.76
  6. Step 6: Final answer
    x = 821.36

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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.