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Finding the Fourth Proportional to 1,442.31, 2,162.84 and 608.82

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Solution

The fourth proportional to 1,442.31, 2,162.84 and 608.82 is: 912.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,442.31 : 2,162.84 = 608.82 : x
  2. Step 2: Convert to fraction form
    1,442.31/2,162.84 = 608.82/x
  3. Step 3: Cross multiply
    1,442.31x = 2,162.84 × 608.82
  4. Step 4: Simplify right side
    1,442.31x = 1,316,777.20
  5. Step 5: Solve for x
    x = 1,316,777.20/1,442.31
  6. Step 6: Final answer
    x = 912.96

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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.