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Finding the Fourth Proportional to 941.76, 1,404.25 and 939.96

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Solution

The fourth proportional to 941.76, 1,404.25 and 939.96 is: 1,401.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.76 : 1,404.25 = 939.96 : x
  2. Step 2: Convert to fraction form
    941.76/1,404.25 = 939.96/x
  3. Step 3: Cross multiply
    941.76x = 1,404.25 × 939.96
  4. Step 4: Simplify right side
    941.76x = 1,319,938.83
  5. Step 5: Solve for x
    x = 1,319,938.83/941.76
  6. Step 6: Final answer
    x = 1,401.57

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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.