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Finding the Fourth Proportional to 1,591.43, 2,385.45 and 603.79

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Solution

The fourth proportional to 1,591.43, 2,385.45 and 603.79 is: 905.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,591.43 : 2,385.45 = 603.79 : x
  2. Step 2: Convert to fraction form
    1,591.43/2,385.45 = 603.79/x
  3. Step 3: Cross multiply
    1,591.43x = 2,385.45 × 603.79
  4. Step 4: Simplify right side
    1,591.43x = 1,440,304.89
  5. Step 5: Solve for x
    x = 1,440,304.89/1,591.43
  6. Step 6: Final answer
    x = 905.04

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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.