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Finding the Fourth Proportional to 445.91, 615.38 and 259.45

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Solution

The fourth proportional to 445.91, 615.38 and 259.45 is: 358.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.91 : 615.38 = 259.45 : x
  2. Step 2: Convert to fraction form
    445.91/615.38 = 259.45/x
  3. Step 3: Cross multiply
    445.91x = 615.38 × 259.45
  4. Step 4: Simplify right side
    445.91x = 159,660.34
  5. Step 5: Solve for x
    x = 159,660.34/445.91
  6. Step 6: Final answer
    x = 358.06

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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.