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Finding the Fourth Proportional to 1,376.96, 2,065.74 and 403.07

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Solution

The fourth proportional to 1,376.96, 2,065.74 and 403.07 is: 604.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,376.96 : 2,065.74 = 403.07 : x
  2. Step 2: Convert to fraction form
    1,376.96/2,065.74 = 403.07/x
  3. Step 3: Cross multiply
    1,376.96x = 2,065.74 × 403.07
  4. Step 4: Simplify right side
    1,376.96x = 832,625.48
  5. Step 5: Solve for x
    x = 832,625.48/1,376.96
  6. Step 6: Final answer
    x = 604.69

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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.