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Finding the Fourth Proportional to 1,288.51, 1,932.83 and 364.14

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Solution

The fourth proportional to 1,288.51, 1,932.83 and 364.14 is: 546.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288.51 : 1,932.83 = 364.14 : x
  2. Step 2: Convert to fraction form
    1,288.51/1,932.83 = 364.14/x
  3. Step 3: Cross multiply
    1,288.51x = 1,932.83 × 364.14
  4. Step 4: Simplify right side
    1,288.51x = 703,810.14
  5. Step 5: Solve for x
    x = 703,810.14/1,288.51
  6. Step 6: Final answer
    x = 546.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.