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Finding the Fourth Proportional to 854.96, 1,280.82 and 507.56

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Solution

The fourth proportional to 854.96, 1,280.82 and 507.56 is: 760.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    854.96 : 1,280.82 = 507.56 : x
  2. Step 2: Convert to fraction form
    854.96/1,280.82 = 507.56/x
  3. Step 3: Cross multiply
    854.96x = 1,280.82 × 507.56
  4. Step 4: Simplify right side
    854.96x = 650,093.00
  5. Step 5: Solve for x
    x = 650,093.00/854.96
  6. Step 6: Final answer
    x = 760.38

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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.