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Finding the Fourth Proportional to 1,200.84, 1,801.27 and 288.84

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Solution

The fourth proportional to 1,200.84, 1,801.27 and 288.84 is: 433.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200.84 : 1,801.27 = 288.84 : x
  2. Step 2: Convert to fraction form
    1,200.84/1,801.27 = 288.84/x
  3. Step 3: Cross multiply
    1,200.84x = 1,801.27 × 288.84
  4. Step 4: Simplify right side
    1,200.84x = 520,284.86
  5. Step 5: Solve for x
    x = 520,284.86/1,200.84
  6. Step 6: Final answer
    x = 433.27

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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.