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Finding the Fourth Proportional to 573.59, 861.74 and 368.55

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Solution

The fourth proportional to 573.59, 861.74 and 368.55 is: 553.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    573.59 : 861.74 = 368.55 : x
  2. Step 2: Convert to fraction form
    573.59/861.74 = 368.55/x
  3. Step 3: Cross multiply
    573.59x = 861.74 × 368.55
  4. Step 4: Simplify right side
    573.59x = 317,592.43
  5. Step 5: Solve for x
    x = 317,592.43/573.59
  6. Step 6: Final answer
    x = 553.70

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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.