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Finding the Fourth Proportional to 997.03, 1,495.79 and 980.49

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Solution

The fourth proportional to 997.03, 1,495.79 and 980.49 is: 1,470.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    997.03 : 1,495.79 = 980.49 : x
  2. Step 2: Convert to fraction form
    997.03/1,495.79 = 980.49/x
  3. Step 3: Cross multiply
    997.03x = 1,495.79 × 980.49
  4. Step 4: Simplify right side
    997.03x = 1,466,607.14
  5. Step 5: Solve for x
    x = 1,466,607.14/997.03
  6. Step 6: Final answer
    x = 1,470.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.