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Finding the Fourth Proportional to 559.65, 839.35 and 328.99

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Solution

The fourth proportional to 559.65, 839.35 and 328.99 is: 493.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    559.65 : 839.35 = 328.99 : x
  2. Step 2: Convert to fraction form
    559.65/839.35 = 328.99/x
  3. Step 3: Cross multiply
    559.65x = 839.35 × 328.99
  4. Step 4: Simplify right side
    559.65x = 276,136.43
  5. Step 5: Solve for x
    x = 276,136.43/559.65
  6. Step 6: Final answer
    x = 493.41

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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.