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Finding the Fourth Proportional to 941.55, 1,299.57 and 543.26

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Solution

The fourth proportional to 941.55, 1,299.57 and 543.26 is: 749.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.55 : 1,299.57 = 543.26 : x
  2. Step 2: Convert to fraction form
    941.55/1,299.57 = 543.26/x
  3. Step 3: Cross multiply
    941.55x = 1,299.57 × 543.26
  4. Step 4: Simplify right side
    941.55x = 705,997.90
  5. Step 5: Solve for x
    x = 705,997.90/941.55
  6. Step 6: Final answer
    x = 749.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.