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Finding the Fourth Proportional to 1,416.97, 2,126.43 and 492.53

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Solution

The fourth proportional to 1,416.97, 2,126.43 and 492.53 is: 739.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416.97 : 2,126.43 = 492.53 : x
  2. Step 2: Convert to fraction form
    1,416.97/2,126.43 = 492.53/x
  3. Step 3: Cross multiply
    1,416.97x = 2,126.43 × 492.53
  4. Step 4: Simplify right side
    1,416.97x = 1,047,317.47
  5. Step 5: Solve for x
    x = 1,047,317.47/1,416.97
  6. Step 6: Final answer
    x = 739.12

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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.