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Finding the Fourth Proportional to 559.09, 837.82 and 315.09

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Solution

The fourth proportional to 559.09, 837.82 and 315.09 is: 472.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.09 : 837.82 = 315.09 : x
  2. Step 2: Convert to fraction form
    559.09/837.82 = 315.09/x
  3. Step 3: Cross multiply
    559.09x = 837.82 × 315.09
  4. Step 4: Simplify right side
    559.09x = 263,988.70
  5. Step 5: Solve for x
    x = 263,988.70/559.09
  6. Step 6: Final answer
    x = 472.18

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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.