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Finding the Fourth Proportional to 569.90, 855.23 and 204.66

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Solution

The fourth proportional to 569.90, 855.23 and 204.66 is: 307.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    569.90 : 855.23 = 204.66 : x
  2. Step 2: Convert to fraction form
    569.90/855.23 = 204.66/x
  3. Step 3: Cross multiply
    569.90x = 855.23 × 204.66
  4. Step 4: Simplify right side
    569.90x = 175,030.35
  5. Step 5: Solve for x
    x = 175,030.35/569.90
  6. Step 6: Final answer
    x = 307.12

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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.