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Finding the Fourth Proportional to 1,661.43, 2,492.52 and 491.37

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Solution

The fourth proportional to 1,661.43, 2,492.52 and 491.37 is: 737.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,661.43 : 2,492.52 = 491.37 : x
  2. Step 2: Convert to fraction form
    1,661.43/2,492.52 = 491.37/x
  3. Step 3: Cross multiply
    1,661.43x = 2,492.52 × 491.37
  4. Step 4: Simplify right side
    1,661.43x = 1,224,749.55
  5. Step 5: Solve for x
    x = 1,224,749.55/1,661.43
  6. Step 6: Final answer
    x = 737.17

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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.