Home / 1,445.92-2,168.40-623.68

Finding the Fourth Proportional to 1,445.92, 2,168.40 and 623.68

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Solution

The fourth proportional to 1,445.92, 2,168.40 and 623.68 is: 935.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.92 : 2,168.40 = 623.68 : x
  2. Step 2: Convert to fraction form
    1,445.92/2,168.40 = 623.68/x
  3. Step 3: Cross multiply
    1,445.92x = 2,168.40 × 623.68
  4. Step 4: Simplify right side
    1,445.92x = 1,352,387.71
  5. Step 5: Solve for x
    x = 1,352,387.71/1,445.92
  6. Step 6: Final answer
    x = 935.31

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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.