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Finding the Fourth Proportional to 579.33, 870.62 and 290.97

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Solution

The fourth proportional to 579.33, 870.62 and 290.97 is: 437.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    579.33 : 870.62 = 290.97 : x
  2. Step 2: Convert to fraction form
    579.33/870.62 = 290.97/x
  3. Step 3: Cross multiply
    579.33x = 870.62 × 290.97
  4. Step 4: Simplify right side
    579.33x = 253,322.85
  5. Step 5: Solve for x
    x = 253,322.85/579.33
  6. Step 6: Final answer
    x = 437.27

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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.