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Finding the Fourth Proportional to 603.79, 833.29 and 521.17

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Solution

The fourth proportional to 603.79, 833.29 and 521.17 is: 719.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.79 : 833.29 = 521.17 : x
  2. Step 2: Convert to fraction form
    603.79/833.29 = 521.17/x
  3. Step 3: Cross multiply
    603.79x = 833.29 × 521.17
  4. Step 4: Simplify right side
    603.79x = 434,282.36
  5. Step 5: Solve for x
    x = 434,282.36/603.79
  6. Step 6: Final answer
    x = 719.26

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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.