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Finding the Fourth Proportional to 628.97, 942.44 and 555.46

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Solution

The fourth proportional to 628.97, 942.44 and 555.46 is: 832.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.97 : 942.44 = 555.46 : x
  2. Step 2: Convert to fraction form
    628.97/942.44 = 555.46/x
  3. Step 3: Cross multiply
    628.97x = 942.44 × 555.46
  4. Step 4: Simplify right side
    628.97x = 523,482.59
  5. Step 5: Solve for x
    x = 523,482.59/628.97
  6. Step 6: Final answer
    x = 832.29

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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.