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Finding the Fourth Proportional to 564.87, 846.42 and 427.82

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Solution

The fourth proportional to 564.87, 846.42 and 427.82 is: 641.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.87 : 846.42 = 427.82 : x
  2. Step 2: Convert to fraction form
    564.87/846.42 = 427.82/x
  3. Step 3: Cross multiply
    564.87x = 846.42 × 427.82
  4. Step 4: Simplify right side
    564.87x = 362,111.17
  5. Step 5: Solve for x
    x = 362,111.17/564.87
  6. Step 6: Final answer
    x = 641.05

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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.