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Finding the Fourth Proportional to 615.35, 848.94 and 394.26

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Solution

The fourth proportional to 615.35, 848.94 and 394.26 is: 543.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    615.35 : 848.94 = 394.26 : x
  2. Step 2: Convert to fraction form
    615.35/848.94 = 394.26/x
  3. Step 3: Cross multiply
    615.35x = 848.94 × 394.26
  4. Step 4: Simplify right side
    615.35x = 334,703.08
  5. Step 5: Solve for x
    x = 334,703.08/615.35
  6. Step 6: Final answer
    x = 543.93

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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.