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Finding the Fourth Proportional to 569.51, 854.22 and 222.78

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Solution

The fourth proportional to 569.51, 854.22 and 222.78 is: 334.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.51 : 854.22 = 222.78 : x
  2. Step 2: Convert to fraction form
    569.51/854.22 = 222.78/x
  3. Step 3: Cross multiply
    569.51x = 854.22 × 222.78
  4. Step 4: Simplify right side
    569.51x = 190,303.13
  5. Step 5: Solve for x
    x = 190,303.13/569.51
  6. Step 6: Final answer
    x = 334.15

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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.