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Finding the Fourth Proportional to 636.51, 954 and 451.13

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Solution

The fourth proportional to 636.51, 954 and 451.13 is: 676.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.51 : 954 = 451.13 : x
  2. Step 2: Convert to fraction form
    636.51/954 = 451.13/x
  3. Step 3: Cross multiply
    636.51x = 954 × 451.13
  4. Step 4: Simplify right side
    636.51x = 430,373.25
  5. Step 5: Solve for x
    x = 430,373.25/636.51
  6. Step 6: Final answer
    x = 676.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.