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Finding the Fourth Proportional to 1,010.05, 1,515.36 and 360.85

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Solution

The fourth proportional to 1,010.05, 1,515.36 and 360.85 is: 541.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010.05 : 1,515.36 = 360.85 : x
  2. Step 2: Convert to fraction form
    1,010.05/1,515.36 = 360.85/x
  3. Step 3: Cross multiply
    1,010.05x = 1,515.36 × 360.85
  4. Step 4: Simplify right side
    1,010.05x = 546,817.66
  5. Step 5: Solve for x
    x = 546,817.66/1,010.05
  6. Step 6: Final answer
    x = 541.38

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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.