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Finding the Fourth Proportional to 2,905.29, 4,358.55 and 825.93

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Solution

The fourth proportional to 2,905.29, 4,358.55 and 825.93 is: 1,239.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,905.29 : 4,358.55 = 825.93 : x
  2. Step 2: Convert to fraction form
    2,905.29/4,358.55 = 825.93/x
  3. Step 3: Cross multiply
    2,905.29x = 4,358.55 × 825.93
  4. Step 4: Simplify right side
    2,905.29x = 3,599,833.34
  5. Step 5: Solve for x
    x = 3,599,833.34/2,905.29
  6. Step 6: Final answer
    x = 1,239.06

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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.