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Finding the Fourth Proportional to 1,364.60, 1,883.08 and 922.43

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Solution

The fourth proportional to 1,364.60, 1,883.08 and 922.43 is: 1,272.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,364.60 : 1,883.08 = 922.43 : x
  2. Step 2: Convert to fraction form
    1,364.60/1,883.08 = 922.43/x
  3. Step 3: Cross multiply
    1,364.60x = 1,883.08 × 922.43
  4. Step 4: Simplify right side
    1,364.60x = 1,737,009.48
  5. Step 5: Solve for x
    x = 1,737,009.48/1,364.60
  6. Step 6: Final answer
    x = 1,272.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.