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Finding the Fourth Proportional to 615.33, 923.63 and 479.86

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Solution

The fourth proportional to 615.33, 923.63 and 479.86 is: 720.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.33 : 923.63 = 479.86 : x
  2. Step 2: Convert to fraction form
    615.33/923.63 = 479.86/x
  3. Step 3: Cross multiply
    615.33x = 923.63 × 479.86
  4. Step 4: Simplify right side
    615.33x = 443,213.09
  5. Step 5: Solve for x
    x = 443,213.09/615.33
  6. Step 6: Final answer
    x = 720.28

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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.