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Finding the Fourth Proportional to 1,015.38, 1,520.38 and 598.59

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Solution

The fourth proportional to 1,015.38, 1,520.38 and 598.59 is: 896.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015.38 : 1,520.38 = 598.59 : x
  2. Step 2: Convert to fraction form
    1,015.38/1,520.38 = 598.59/x
  3. Step 3: Cross multiply
    1,015.38x = 1,520.38 × 598.59
  4. Step 4: Simplify right side
    1,015.38x = 910,084.26
  5. Step 5: Solve for x
    x = 910,084.26/1,015.38
  6. Step 6: Final answer
    x = 896.30

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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.