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Finding the Fourth Proportional to 1,736.32, 2,604.68 and 762.30

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Solution

The fourth proportional to 1,736.32, 2,604.68 and 762.30 is: 1,143.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,736.32 : 2,604.68 = 762.30 : x
  2. Step 2: Convert to fraction form
    1,736.32/2,604.68 = 762.30/x
  3. Step 3: Cross multiply
    1,736.32x = 2,604.68 × 762.30
  4. Step 4: Simplify right side
    1,736.32x = 1,985,547.56
  5. Step 5: Solve for x
    x = 1,985,547.56/1,736.32
  6. Step 6: Final answer
    x = 1,143.54

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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.