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Finding the Fourth Proportional to 1,573.31, 2,358.23 and 792.81

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Solution

The fourth proportional to 1,573.31, 2,358.23 and 792.81 is: 1,188.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,573.31 : 2,358.23 = 792.81 : x
  2. Step 2: Convert to fraction form
    1,573.31/2,358.23 = 792.81/x
  3. Step 3: Cross multiply
    1,573.31x = 2,358.23 × 792.81
  4. Step 4: Simplify right side
    1,573.31x = 1,869,624.36
  5. Step 5: Solve for x
    x = 1,869,624.36/1,573.31
  6. Step 6: Final answer
    x = 1,188.34

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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.