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Finding the Fourth Proportional to 856.41, 1,283.84 and 336.87

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Solution

The fourth proportional to 856.41, 1,283.84 and 336.87 is: 505.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    856.41 : 1,283.84 = 336.87 : x
  2. Step 2: Convert to fraction form
    856.41/1,283.84 = 336.87/x
  3. Step 3: Cross multiply
    856.41x = 1,283.84 × 336.87
  4. Step 4: Simplify right side
    856.41x = 432,485.50
  5. Step 5: Solve for x
    x = 432,485.50/856.41
  6. Step 6: Final answer
    x = 505.00

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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.