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Finding the Fourth Proportional to 856.44, 1,282.77 and 583.02

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Solution

The fourth proportional to 856.44, 1,282.77 and 583.02 is: 873.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    856.44 : 1,282.77 = 583.02 : x
  2. Step 2: Convert to fraction form
    856.44/1,282.77 = 583.02/x
  3. Step 3: Cross multiply
    856.44x = 1,282.77 × 583.02
  4. Step 4: Simplify right side
    856.44x = 747,880.57
  5. Step 5: Solve for x
    x = 747,880.57/856.44
  6. Step 6: Final answer
    x = 873.24

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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.