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Finding the Fourth Proportional to 801.84, 1,200.90 and 527.82

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Solution

The fourth proportional to 801.84, 1,200.90 and 527.82 is: 790.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.84 : 1,200.90 = 527.82 : x
  2. Step 2: Convert to fraction form
    801.84/1,200.90 = 527.82/x
  3. Step 3: Cross multiply
    801.84x = 1,200.90 × 527.82
  4. Step 4: Simplify right side
    801.84x = 633,859.04
  5. Step 5: Solve for x
    x = 633,859.04/801.84
  6. Step 6: Final answer
    x = 790.51

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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.