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Finding the Fourth Proportional to 941.21, 1,411.05 and 633.67

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Solution

The fourth proportional to 941.21, 1,411.05 and 633.67 is: 949.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.21 : 1,411.05 = 633.67 : x
  2. Step 2: Convert to fraction form
    941.21/1,411.05 = 633.67/x
  3. Step 3: Cross multiply
    941.21x = 1,411.05 × 633.67
  4. Step 4: Simplify right side
    941.21x = 894,136.57
  5. Step 5: Solve for x
    x = 894,136.57/941.21
  6. Step 6: Final answer
    x = 949.98

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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.