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Finding the Fourth Proportional to 1,008.99, 1,513.13 and 350.69

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Solution

The fourth proportional to 1,008.99, 1,513.13 and 350.69 is: 525.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008.99 : 1,513.13 = 350.69 : x
  2. Step 2: Convert to fraction form
    1,008.99/1,513.13 = 350.69/x
  3. Step 3: Cross multiply
    1,008.99x = 1,513.13 × 350.69
  4. Step 4: Simplify right side
    1,008.99x = 530,639.56
  5. Step 5: Solve for x
    x = 530,639.56/1,008.99
  6. Step 6: Final answer
    x = 525.91

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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.