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Finding the Fourth Proportional to 628.47, 935.28 and 608.22

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Solution

The fourth proportional to 628.47, 935.28 and 608.22 is: 905.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    628.47 : 935.28 = 608.22 : x
  2. Step 2: Convert to fraction form
    628.47/935.28 = 608.22/x
  3. Step 3: Cross multiply
    628.47x = 935.28 × 608.22
  4. Step 4: Simplify right side
    628.47x = 568,856.00
  5. Step 5: Solve for x
    x = 568,856.00/628.47
  6. Step 6: Final answer
    x = 905.14

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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.