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Finding the Fourth Proportional to 569.52, 853.45 and 486.77

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Solution

The fourth proportional to 569.52, 853.45 and 486.77 is: 729.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.52 : 853.45 = 486.77 : x
  2. Step 2: Convert to fraction form
    569.52/853.45 = 486.77/x
  3. Step 3: Cross multiply
    569.52x = 853.45 × 486.77
  4. Step 4: Simplify right side
    569.52x = 415,428.37
  5. Step 5: Solve for x
    x = 415,428.37/569.52
  6. Step 6: Final answer
    x = 729.44

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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.