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Finding the Fourth Proportional to 941.33, 1,411.95 and 448.09

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Solution

The fourth proportional to 941.33, 1,411.95 and 448.09 is: 672.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.33 : 1,411.95 = 448.09 : x
  2. Step 2: Convert to fraction form
    941.33/1,411.95 = 448.09/x
  3. Step 3: Cross multiply
    941.33x = 1,411.95 × 448.09
  4. Step 4: Simplify right side
    941.33x = 632,677.15
  5. Step 5: Solve for x
    x = 632,677.15/941.33
  6. Step 6: Final answer
    x = 672.11

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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.