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Finding the Fourth Proportional to 994.04, 1,490.52 and 531.69

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Solution

The fourth proportional to 994.04, 1,490.52 and 531.69 is: 797.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    994.04 : 1,490.52 = 531.69 : x
  2. Step 2: Convert to fraction form
    994.04/1,490.52 = 531.69/x
  3. Step 3: Cross multiply
    994.04x = 1,490.52 × 531.69
  4. Step 4: Simplify right side
    994.04x = 792,494.58
  5. Step 5: Solve for x
    x = 792,494.58/994.04
  6. Step 6: Final answer
    x = 797.25

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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.