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Finding the Fourth Proportional to 1,304.71, 1,800.65 and 745.26

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Solution

The fourth proportional to 1,304.71, 1,800.65 and 745.26 is: 1,028.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,304.71 : 1,800.65 = 745.26 : x
  2. Step 2: Convert to fraction form
    1,304.71/1,800.65 = 745.26/x
  3. Step 3: Cross multiply
    1,304.71x = 1,800.65 × 745.26
  4. Step 4: Simplify right side
    1,304.71x = 1,341,954.28
  5. Step 5: Solve for x
    x = 1,341,954.28/1,304.71
  6. Step 6: Final answer
    x = 1,028.55

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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.