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Finding the Fourth Proportional to 1,642.02, 2,466.69 and 993.21

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Solution

The fourth proportional to 1,642.02, 2,466.69 and 993.21 is: 1,492.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,642.02 : 2,466.69 = 993.21 : x
  2. Step 2: Convert to fraction form
    1,642.02/2,466.69 = 993.21/x
  3. Step 3: Cross multiply
    1,642.02x = 2,466.69 × 993.21
  4. Step 4: Simplify right side
    1,642.02x = 2,449,941.17
  5. Step 5: Solve for x
    x = 2,449,941.17/1,642.02
  6. Step 6: Final answer
    x = 1,492.03

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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.