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Finding the Fourth Proportional to 750.36, 1,035.50 and 418.73

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Solution

The fourth proportional to 750.36, 1,035.50 and 418.73 is: 577.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    750.36 : 1,035.50 = 418.73 : x
  2. Step 2: Convert to fraction form
    750.36/1,035.50 = 418.73/x
  3. Step 3: Cross multiply
    750.36x = 1,035.50 × 418.73
  4. Step 4: Simplify right side
    750.36x = 433,594.92
  5. Step 5: Solve for x
    x = 433,594.92/750.36
  6. Step 6: Final answer
    x = 577.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.