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Finding the Fourth Proportional to 941.81, 1,299.70 and 522.17

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Solution

The fourth proportional to 941.81, 1,299.70 and 522.17 is: 720.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.81 : 1,299.70 = 522.17 : x
  2. Step 2: Convert to fraction form
    941.81/1,299.70 = 522.17/x
  3. Step 3: Cross multiply
    941.81x = 1,299.70 × 522.17
  4. Step 4: Simplify right side
    941.81x = 678,656.55
  5. Step 5: Solve for x
    x = 678,656.55/941.81
  6. Step 6: Final answer
    x = 720.59

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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.