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Finding the Fourth Proportional to 716.50, 989.04 and 606.54

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Solution

The fourth proportional to 716.50, 989.04 and 606.54 is: 837.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    716.50 : 989.04 = 606.54 : x
  2. Step 2: Convert to fraction form
    716.50/989.04 = 606.54/x
  3. Step 3: Cross multiply
    716.50x = 989.04 × 606.54
  4. Step 4: Simplify right side
    716.50x = 599,892.32
  5. Step 5: Solve for x
    x = 599,892.32/716.50
  6. Step 6: Final answer
    x = 837.25

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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.