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Finding the Fourth Proportional to 460.08, 634.62 and 312.48

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Solution

The fourth proportional to 460.08, 634.62 and 312.48 is: 431.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.08 : 634.62 = 312.48 : x
  2. Step 2: Convert to fraction form
    460.08/634.62 = 312.48/x
  3. Step 3: Cross multiply
    460.08x = 634.62 × 312.48
  4. Step 4: Simplify right side
    460.08x = 198,306.06
  5. Step 5: Solve for x
    x = 198,306.06/460.08
  6. Step 6: Final answer
    x = 431.03

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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.