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Finding the Fourth Proportional to 559.10, 838.99 and 353.39

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Solution

The fourth proportional to 559.10, 838.99 and 353.39 is: 530.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.10 : 838.99 = 353.39 : x
  2. Step 2: Convert to fraction form
    559.10/838.99 = 353.39/x
  3. Step 3: Cross multiply
    559.10x = 838.99 × 353.39
  4. Step 4: Simplify right side
    559.10x = 296,488.63
  5. Step 5: Solve for x
    x = 296,488.63/559.10
  6. Step 6: Final answer
    x = 530.30

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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.