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Finding the Fourth Proportional to 628.37, 941.65 and 551.15

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Solution

The fourth proportional to 628.37, 941.65 and 551.15 is: 825.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.37 : 941.65 = 551.15 : x
  2. Step 2: Convert to fraction form
    628.37/941.65 = 551.15/x
  3. Step 3: Cross multiply
    628.37x = 941.65 × 551.15
  4. Step 4: Simplify right side
    628.37x = 518,984.31
  5. Step 5: Solve for x
    x = 518,984.31/628.37
  6. Step 6: Final answer
    x = 825.93

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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.