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Finding the Fourth Proportional to 569.42, 853.79 and 322.23

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Solution

The fourth proportional to 569.42, 853.79 and 322.23 is: 483.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.42 : 853.79 = 322.23 : x
  2. Step 2: Convert to fraction form
    569.42/853.79 = 322.23/x
  3. Step 3: Cross multiply
    569.42x = 853.79 × 322.23
  4. Step 4: Simplify right side
    569.42x = 275,117.56
  5. Step 5: Solve for x
    x = 275,117.56/569.42
  6. Step 6: Final answer
    x = 483.16

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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.