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Finding the Fourth Proportional to 628.56, 935.40 and 605.52

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Solution

The fourth proportional to 628.56, 935.40 and 605.52 is: 901.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.56 : 935.40 = 605.52 : x
  2. Step 2: Convert to fraction form
    628.56/935.40 = 605.52/x
  3. Step 3: Cross multiply
    628.56x = 935.40 × 605.52
  4. Step 4: Simplify right side
    628.56x = 566,403.41
  5. Step 5: Solve for x
    x = 566,403.41/628.56
  6. Step 6: Final answer
    x = 901.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.