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Finding the Fourth Proportional to 1,360.89, 2,038.14 and 668.03

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Solution

The fourth proportional to 1,360.89, 2,038.14 and 668.03 is: 1,000.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.89 : 2,038.14 = 668.03 : x
  2. Step 2: Convert to fraction form
    1,360.89/2,038.14 = 668.03/x
  3. Step 3: Cross multiply
    1,360.89x = 2,038.14 × 668.03
  4. Step 4: Simplify right side
    1,360.89x = 1,361,528.47
  5. Step 5: Solve for x
    x = 1,361,528.47/1,360.89
  6. Step 6: Final answer
    x = 1,000.47

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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.