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Finding the Fourth Proportional to 1,095.84, 1,634.51 and 920.46

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Solution

The fourth proportional to 1,095.84, 1,634.51 and 920.46 is: 1,372.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,095.84 : 1,634.51 = 920.46 : x
  2. Step 2: Convert to fraction form
    1,095.84/1,634.51 = 920.46/x
  3. Step 3: Cross multiply
    1,095.84x = 1,634.51 × 920.46
  4. Step 4: Simplify right side
    1,095.84x = 1,504,501.07
  5. Step 5: Solve for x
    x = 1,504,501.07/1,095.84
  6. Step 6: Final answer
    x = 1,372.92

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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.