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Finding the Fourth Proportional to 627.70, 941.91 and 339.46

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Solution

The fourth proportional to 627.70, 941.91 and 339.46 is: 509.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.70 : 941.91 = 339.46 : x
  2. Step 2: Convert to fraction form
    627.70/941.91 = 339.46/x
  3. Step 3: Cross multiply
    627.70x = 941.91 × 339.46
  4. Step 4: Simplify right side
    627.70x = 319,740.77
  5. Step 5: Solve for x
    x = 319,740.77/627.70
  6. Step 6: Final answer
    x = 509.38

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1.5x scale

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.