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Finding the Fourth Proportional to 460.62, 636.04 and 313.74

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Solution

The fourth proportional to 460.62, 636.04 and 313.74 is: 433.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.62 : 636.04 = 313.74 : x
  2. Step 2: Convert to fraction form
    460.62/636.04 = 313.74/x
  3. Step 3: Cross multiply
    460.62x = 636.04 × 313.74
  4. Step 4: Simplify right side
    460.62x = 199,551.19
  5. Step 5: Solve for x
    x = 199,551.19/460.62
  6. Step 6: Final answer
    x = 433.22

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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.