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Finding the Fourth Proportional to 564.90, 845.18 and 308.58

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Solution

The fourth proportional to 564.90, 845.18 and 308.58 is: 461.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.90 : 845.18 = 308.58 : x
  2. Step 2: Convert to fraction form
    564.90/845.18 = 308.58/x
  3. Step 3: Cross multiply
    564.90x = 845.18 × 308.58
  4. Step 4: Simplify right side
    564.90x = 260,805.64
  5. Step 5: Solve for x
    x = 260,805.64/564.90
  6. Step 6: Final answer
    x = 461.68

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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.