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Finding the Fourth Proportional to 1,365.04, 1,881.56 and 922.17

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Solution

The fourth proportional to 1,365.04, 1,881.56 and 922.17 is: 1,271.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,365.04 : 1,881.56 = 922.17 : x
  2. Step 2: Convert to fraction form
    1,365.04/1,881.56 = 922.17/x
  3. Step 3: Cross multiply
    1,365.04x = 1,881.56 × 922.17
  4. Step 4: Simplify right side
    1,365.04x = 1,735,118.19
  5. Step 5: Solve for x
    x = 1,735,118.19/1,365.04
  6. Step 6: Final answer
    x = 1,271.11

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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.