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Finding the Fourth Proportional to 1,465.49, 2,197.54 and 490.90

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Solution

The fourth proportional to 1,465.49, 2,197.54 and 490.90 is: 736.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,465.49 : 2,197.54 = 490.90 : x
  2. Step 2: Convert to fraction form
    1,465.49/2,197.54 = 490.90/x
  3. Step 3: Cross multiply
    1,465.49x = 2,197.54 × 490.90
  4. Step 4: Simplify right side
    1,465.49x = 1,078,772.39
  5. Step 5: Solve for x
    x = 1,078,772.39/1,465.49
  6. Step 6: Final answer
    x = 736.12

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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.