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Finding the Fourth Proportional to 1,035.29, 1,552.94 and 385.88

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Solution

The fourth proportional to 1,035.29, 1,552.94 and 385.88 is: 578.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,035.29 : 1,552.94 = 385.88 : x
  2. Step 2: Convert to fraction form
    1,035.29/1,552.94 = 385.88/x
  3. Step 3: Cross multiply
    1,035.29x = 1,552.94 × 385.88
  4. Step 4: Simplify right side
    1,035.29x = 599,240.24
  5. Step 5: Solve for x
    x = 599,240.24/1,035.29
  6. Step 6: Final answer
    x = 578.81

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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.