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Finding the Fourth Proportional to 564.52, 845.10 and 455.40

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Solution

The fourth proportional to 564.52, 845.10 and 455.40 is: 681.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.52 : 845.10 = 455.40 : x
  2. Step 2: Convert to fraction form
    564.52/845.10 = 455.40/x
  3. Step 3: Cross multiply
    564.52x = 845.10 × 455.40
  4. Step 4: Simplify right side
    564.52x = 384,858.54
  5. Step 5: Solve for x
    x = 384,858.54/564.52
  6. Step 6: Final answer
    x = 681.74

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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.