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Finding the Fourth Proportional to 564.70, 845.58 and 454.51

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Solution

The fourth proportional to 564.70, 845.58 and 454.51 is: 680.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.70 : 845.58 = 454.51 : x
  2. Step 2: Convert to fraction form
    564.70/845.58 = 454.51/x
  3. Step 3: Cross multiply
    564.70x = 845.58 × 454.51
  4. Step 4: Simplify right side
    564.70x = 384,324.57
  5. Step 5: Solve for x
    x = 384,324.57/564.70
  6. Step 6: Final answer
    x = 680.58

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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.