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Finding the Fourth Proportional to 569.36, 853.84 and 478.08

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Solution

The fourth proportional to 569.36, 853.84 and 478.08 is: 716.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.36 : 853.84 = 478.08 : x
  2. Step 2: Convert to fraction form
    569.36/853.84 = 478.08/x
  3. Step 3: Cross multiply
    569.36x = 853.84 × 478.08
  4. Step 4: Simplify right side
    569.36x = 408,203.83
  5. Step 5: Solve for x
    x = 408,203.83/569.36
  6. Step 6: Final answer
    x = 716.95

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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.