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Finding the Fourth Proportional to 603.94, 833.05 and 479.41

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Solution

The fourth proportional to 603.94, 833.05 and 479.41 is: 661.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.94 : 833.05 = 479.41 : x
  2. Step 2: Convert to fraction form
    603.94/833.05 = 479.41/x
  3. Step 3: Cross multiply
    603.94x = 833.05 × 479.41
  4. Step 4: Simplify right side
    603.94x = 399,372.50
  5. Step 5: Solve for x
    x = 399,372.50/603.94
  6. Step 6: Final answer
    x = 661.28

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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.