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Finding the Fourth Proportional to 717.22, 989.43 and 437.23

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Solution

The fourth proportional to 717.22, 989.43 and 437.23 is: 603.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.22 : 989.43 = 437.23 : x
  2. Step 2: Convert to fraction form
    717.22/989.43 = 437.23/x
  3. Step 3: Cross multiply
    717.22x = 989.43 × 437.23
  4. Step 4: Simplify right side
    717.22x = 432,603.53
  5. Step 5: Solve for x
    x = 432,603.53/717.22
  6. Step 6: Final answer
    x = 603.17

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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.