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Finding the Fourth Proportional to 603.63, 905.60 and 343.93

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Solution

The fourth proportional to 603.63, 905.60 and 343.93 is: 515.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.63 : 905.60 = 343.93 : x
  2. Step 2: Convert to fraction form
    603.63/905.60 = 343.93/x
  3. Step 3: Cross multiply
    603.63x = 905.60 × 343.93
  4. Step 4: Simplify right side
    603.63x = 311,463.01
  5. Step 5: Solve for x
    x = 311,463.01/603.63
  6. Step 6: Final answer
    x = 515.98

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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.