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Finding the Fourth Proportional to 450.45, 679.66 and 435.13

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Solution

The fourth proportional to 450.45, 679.66 and 435.13 is: 656.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    450.45 : 679.66 = 435.13 : x
  2. Step 2: Convert to fraction form
    450.45/679.66 = 435.13/x
  3. Step 3: Cross multiply
    450.45x = 679.66 × 435.13
  4. Step 4: Simplify right side
    450.45x = 295,737.67
  5. Step 5: Solve for x
    x = 295,737.67/450.45
  6. Step 6: Final answer
    x = 656.54

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.