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Finding the Fourth Proportional to 1,256.82, 1,885.63 and 608.01

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Solution

The fourth proportional to 1,256.82, 1,885.63 and 608.01 is: 912.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.82 : 1,885.63 = 608.01 : x
  2. Step 2: Convert to fraction form
    1,256.82/1,885.63 = 608.01/x
  3. Step 3: Cross multiply
    1,256.82x = 1,885.63 × 608.01
  4. Step 4: Simplify right side
    1,256.82x = 1,146,481.90
  5. Step 5: Solve for x
    x = 1,146,481.90/1,256.82
  6. Step 6: Final answer
    x = 912.21

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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.