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Finding the Fourth Proportional to 453.36, 625.94 and 287.67

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Solution

The fourth proportional to 453.36, 625.94 and 287.67 is: 397.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    453.36 : 625.94 = 287.67 : x
  2. Step 2: Convert to fraction form
    453.36/625.94 = 287.67/x
  3. Step 3: Cross multiply
    453.36x = 625.94 × 287.67
  4. Step 4: Simplify right side
    453.36x = 180,064.16
  5. Step 5: Solve for x
    x = 180,064.16/453.36
  6. Step 6: Final answer
    x = 397.18

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.