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Finding the Fourth Proportional to 920.97, 1,373.94 and 895.86

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Solution

The fourth proportional to 920.97, 1,373.94 and 895.86 is: 1,336.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    920.97 : 1,373.94 = 895.86 : x
  2. Step 2: Convert to fraction form
    920.97/1,373.94 = 895.86/x
  3. Step 3: Cross multiply
    920.97x = 1,373.94 × 895.86
  4. Step 4: Simplify right side
    920.97x = 1,230,857.89
  5. Step 5: Solve for x
    x = 1,230,857.89/920.97
  6. Step 6: Final answer
    x = 1,336.48

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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.