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Finding the Fourth Proportional to 450.24, 670.56 and 425.28

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Solution

The fourth proportional to 450.24, 670.56 and 425.28 is: 633.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.24 : 670.56 = 425.28 : x
  2. Step 2: Convert to fraction form
    450.24/670.56 = 425.28/x
  3. Step 3: Cross multiply
    450.24x = 670.56 × 425.28
  4. Step 4: Simplify right side
    450.24x = 285,175.76
  5. Step 5: Solve for x
    x = 285,175.76/450.24
  6. Step 6: Final answer
    x = 633.39

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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.