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Finding the Fourth Proportional to 569.36, 853.61 and 260.99

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Solution

The fourth proportional to 569.36, 853.61 and 260.99 is: 391.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.36 : 853.61 = 260.99 : x
  2. Step 2: Convert to fraction form
    569.36/853.61 = 260.99/x
  3. Step 3: Cross multiply
    569.36x = 853.61 × 260.99
  4. Step 4: Simplify right side
    569.36x = 222,784.50
  5. Step 5: Solve for x
    x = 222,784.50/569.36
  6. Step 6: Final answer
    x = 391.29

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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.