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Finding the Fourth Proportional to 615.96, 850.02 and 439.23

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Solution

The fourth proportional to 615.96, 850.02 and 439.23 is: 606.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.96 : 850.02 = 439.23 : x
  2. Step 2: Convert to fraction form
    615.96/850.02 = 439.23/x
  3. Step 3: Cross multiply
    615.96x = 850.02 × 439.23
  4. Step 4: Simplify right side
    615.96x = 373,354.28
  5. Step 5: Solve for x
    x = 373,354.28/615.96
  6. Step 6: Final answer
    x = 606.13

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1.5x scale

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.