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Finding the Fourth Proportional to 564.56, 779.84 and 454.45

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Solution

The fourth proportional to 564.56, 779.84 and 454.45 is: 627.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.56 : 779.84 = 454.45 : x
  2. Step 2: Convert to fraction form
    564.56/779.84 = 454.45/x
  3. Step 3: Cross multiply
    564.56x = 779.84 × 454.45
  4. Step 4: Simplify right side
    564.56x = 354,398.29
  5. Step 5: Solve for x
    x = 354,398.29/564.56
  6. Step 6: Final answer
    x = 627.74

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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.