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Finding the Fourth Proportional to 603.13, 832.47 and 393.83

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Solution

The fourth proportional to 603.13, 832.47 and 393.83 is: 543.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.13 : 832.47 = 393.83 : x
  2. Step 2: Convert to fraction form
    603.13/832.47 = 393.83/x
  3. Step 3: Cross multiply
    603.13x = 832.47 × 393.83
  4. Step 4: Simplify right side
    603.13x = 327,847.50
  5. Step 5: Solve for x
    x = 327,847.50/603.13
  6. Step 6: Final answer
    x = 543.58

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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.