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Finding the Fourth Proportional to 856.70, 1,182.02 and 577.46

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Solution

The fourth proportional to 856.70, 1,182.02 and 577.46 is: 796.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    856.70 : 1,182.02 = 577.46 : x
  2. Step 2: Convert to fraction form
    856.70/1,182.02 = 577.46/x
  3. Step 3: Cross multiply
    856.70x = 1,182.02 × 577.46
  4. Step 4: Simplify right side
    856.70x = 682,569.27
  5. Step 5: Solve for x
    x = 682,569.27/856.70
  6. Step 6: Final answer
    x = 796.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.