Home / 1,445.21-2,168.16-623.49

Finding the Fourth Proportional to 1,445.21, 2,168.16 and 623.49

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Solution

The fourth proportional to 1,445.21, 2,168.16 and 623.49 is: 935.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,445.21 : 2,168.16 = 623.49 : x
  2. Step 2: Convert to fraction form
    1,445.21/2,168.16 = 623.49/x
  3. Step 3: Cross multiply
    1,445.21x = 2,168.16 × 623.49
  4. Step 4: Simplify right side
    1,445.21x = 1,351,826.08
  5. Step 5: Solve for x
    x = 1,351,826.08/1,445.21
  6. Step 6: Final answer
    x = 935.38

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1.5x scale

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.