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Finding the Fourth Proportional to 1,364.18, 1,881.86 and 922.23

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Solution

The fourth proportional to 1,364.18, 1,881.86 and 922.23 is: 1,272.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,364.18 : 1,881.86 = 922.23 : x
  2. Step 2: Convert to fraction form
    1,364.18/1,881.86 = 922.23/x
  3. Step 3: Cross multiply
    1,364.18x = 1,881.86 × 922.23
  4. Step 4: Simplify right side
    1,364.18x = 1,735,503.14
  5. Step 5: Solve for x
    x = 1,735,503.14/1,364.18
  6. Step 6: Final answer
    x = 1,272.20

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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.