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Finding the Fourth Proportional to 628.58, 942.56 and 368.65

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Solution

The fourth proportional to 628.58, 942.56 and 368.65 is: 552.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.58 : 942.56 = 368.65 : x
  2. Step 2: Convert to fraction form
    628.58/942.56 = 368.65/x
  3. Step 3: Cross multiply
    628.58x = 942.56 × 368.65
  4. Step 4: Simplify right side
    628.58x = 347,474.74
  5. Step 5: Solve for x
    x = 347,474.74/628.58
  6. Step 6: Final answer
    x = 552.79

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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.