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Finding the Fourth Proportional to 757.32, 1,133.76 and 603.48

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Solution

The fourth proportional to 757.32, 1,133.76 and 603.48 is: 903.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    757.32 : 1,133.76 = 603.48 : x
  2. Step 2: Convert to fraction form
    757.32/1,133.76 = 603.48/x
  3. Step 3: Cross multiply
    757.32x = 1,133.76 × 603.48
  4. Step 4: Simplify right side
    757.32x = 684,201.48
  5. Step 5: Solve for x
    x = 684,201.48/757.32
  6. Step 6: Final answer
    x = 903.45

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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.