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Finding the Fourth Proportional to 577.68, 862.14 and 573.90

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Solution

The fourth proportional to 577.68, 862.14 and 573.90 is: 856.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.68 : 862.14 = 573.90 : x
  2. Step 2: Convert to fraction form
    577.68/862.14 = 573.90/x
  3. Step 3: Cross multiply
    577.68x = 862.14 × 573.90
  4. Step 4: Simplify right side
    577.68x = 494,782.15
  5. Step 5: Solve for x
    x = 494,782.15/577.68
  6. Step 6: Final answer
    x = 856.50

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.