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Finding the Fourth Proportional to 757.84, 1,135.34 and 603.94

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Solution

The fourth proportional to 757.84, 1,135.34 and 603.94 is: 904.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    757.84 : 1,135.34 = 603.94 : x
  2. Step 2: Convert to fraction form
    757.84/1,135.34 = 603.94/x
  3. Step 3: Cross multiply
    757.84x = 1,135.34 × 603.94
  4. Step 4: Simplify right side
    757.84x = 685,677.24
  5. Step 5: Solve for x
    x = 685,677.24/757.84
  6. Step 6: Final answer
    x = 904.78

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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.