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Finding the Fourth Proportional to 573.55, 859.96 and 261.29

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Solution

The fourth proportional to 573.55, 859.96 and 261.29 is: 391.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.55 : 859.96 = 261.29 : x
  2. Step 2: Convert to fraction form
    573.55/859.96 = 261.29/x
  3. Step 3: Cross multiply
    573.55x = 859.96 × 261.29
  4. Step 4: Simplify right side
    573.55x = 224,701.42
  5. Step 5: Solve for x
    x = 224,701.42/573.55
  6. Step 6: Final answer
    x = 391.77

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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.