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Finding the Fourth Proportional to 1,716.27, 2,368.42 and 930.31

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Solution

The fourth proportional to 1,716.27, 2,368.42 and 930.31 is: 1,283.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,716.27 : 2,368.42 = 930.31 : x
  2. Step 2: Convert to fraction form
    1,716.27/2,368.42 = 930.31/x
  3. Step 3: Cross multiply
    1,716.27x = 2,368.42 × 930.31
  4. Step 4: Simplify right side
    1,716.27x = 2,203,364.81
  5. Step 5: Solve for x
    x = 2,203,364.81/1,716.27
  6. Step 6: Final answer
    x = 1,283.81

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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.