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Finding the Fourth Proportional to 603.93, 833.44 and 427.21

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Solution

The fourth proportional to 603.93, 833.44 and 427.21 is: 589.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.93 : 833.44 = 427.21 : x
  2. Step 2: Convert to fraction form
    603.93/833.44 = 427.21/x
  3. Step 3: Cross multiply
    603.93x = 833.44 × 427.21
  4. Step 4: Simplify right side
    603.93x = 356,051.55
  5. Step 5: Solve for x
    x = 356,051.55/603.93
  6. Step 6: Final answer
    x = 589.56

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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.