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Finding the Fourth Proportional to 1,856.28, 2,783.93 and 623.44

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Solution

The fourth proportional to 1,856.28, 2,783.93 and 623.44 is: 934.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,856.28 : 2,783.93 = 623.44 : x
  2. Step 2: Convert to fraction form
    1,856.28/2,783.93 = 623.44/x
  3. Step 3: Cross multiply
    1,856.28x = 2,783.93 × 623.44
  4. Step 4: Simplify right side
    1,856.28x = 1,735,607.92
  5. Step 5: Solve for x
    x = 1,735,607.92/1,856.28
  6. Step 6: Final answer
    x = 934.99

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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.