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Finding the Fourth Proportional to 573.86, 861.21 and 357.59

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Solution

The fourth proportional to 573.86, 861.21 and 357.59 is: 536.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.86 : 861.21 = 357.59 : x
  2. Step 2: Convert to fraction form
    573.86/861.21 = 357.59/x
  3. Step 3: Cross multiply
    573.86x = 861.21 × 357.59
  4. Step 4: Simplify right side
    573.86x = 307,955.78
  5. Step 5: Solve for x
    x = 307,955.78/573.86
  6. Step 6: Final answer
    x = 536.64

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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.