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Finding the Fourth Proportional to 1,445.13, 2,168.19 and 623.88

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Solution

The fourth proportional to 1,445.13, 2,168.19 and 623.88 is: 936.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.13 : 2,168.19 = 623.88 : x
  2. Step 2: Convert to fraction form
    1,445.13/2,168.19 = 623.88/x
  3. Step 3: Cross multiply
    1,445.13x = 2,168.19 × 623.88
  4. Step 4: Simplify right side
    1,445.13x = 1,352,690.38
  5. Step 5: Solve for x
    x = 1,352,690.38/1,445.13
  6. Step 6: Final answer
    x = 936.03

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.