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Finding the Fourth Proportional to 615.20, 848.96 and 366.48

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Solution

The fourth proportional to 615.20, 848.96 and 366.48 is: 505.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.20 : 848.96 = 366.48 : x
  2. Step 2: Convert to fraction form
    615.20/848.96 = 366.48/x
  3. Step 3: Cross multiply
    615.20x = 848.96 × 366.48
  4. Step 4: Simplify right side
    615.20x = 311,126.86
  5. Step 5: Solve for x
    x = 311,126.86/615.20
  6. Step 6: Final answer
    x = 505.73

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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.