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Finding the Fourth Proportional to 445.85, 615.25 and 259.32

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Solution

The fourth proportional to 445.85, 615.25 and 259.32 is: 357.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.85 : 615.25 = 259.32 : x
  2. Step 2: Convert to fraction form
    445.85/615.25 = 259.32/x
  3. Step 3: Cross multiply
    445.85x = 615.25 × 259.32
  4. Step 4: Simplify right side
    445.85x = 159,545.33
  5. Step 5: Solve for x
    x = 159,545.33/445.85
  6. Step 6: Final answer
    x = 357.85

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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.