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Finding the Fourth Proportional to 941.92, 1,412.72 and 292.64

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Solution

The fourth proportional to 941.92, 1,412.72 and 292.64 is: 438.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    941.92 : 1,412.72 = 292.64 : x
  2. Step 2: Convert to fraction form
    941.92/1,412.72 = 292.64/x
  3. Step 3: Cross multiply
    941.92x = 1,412.72 × 292.64
  4. Step 4: Simplify right side
    941.92x = 413,418.38
  5. Step 5: Solve for x
    x = 413,418.38/941.92
  6. Step 6: Final answer
    x = 438.91

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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.