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Finding the Fourth Proportional to 1,535.62, 2,302.99 and 439.69

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Solution

The fourth proportional to 1,535.62, 2,302.99 and 439.69 is: 659.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.62 : 2,302.99 = 439.69 : x
  2. Step 2: Convert to fraction form
    1,535.62/2,302.99 = 439.69/x
  3. Step 3: Cross multiply
    1,535.62x = 2,302.99 × 439.69
  4. Step 4: Simplify right side
    1,535.62x = 1,012,601.67
  5. Step 5: Solve for x
    x = 1,012,601.67/1,535.62
  6. Step 6: Final answer
    x = 659.41

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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.