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Finding the Fourth Proportional to 801.91, 1,200.84 and 508.52

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Solution

The fourth proportional to 801.91, 1,200.84 and 508.52 is: 761.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.91 : 1,200.84 = 508.52 : x
  2. Step 2: Convert to fraction form
    801.91/1,200.84 = 508.52/x
  3. Step 3: Cross multiply
    801.91x = 1,200.84 × 508.52
  4. Step 4: Simplify right side
    801.91x = 610,651.16
  5. Step 5: Solve for x
    x = 610,651.16/801.91
  6. Step 6: Final answer
    x = 761.50

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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.