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Finding the Fourth Proportional to 460.30, 690.36 and 171.58

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Solution

The fourth proportional to 460.30, 690.36 and 171.58 is: 257.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.30 : 690.36 = 171.58 : x
  2. Step 2: Convert to fraction form
    460.30/690.36 = 171.58/x
  3. Step 3: Cross multiply
    460.30x = 690.36 × 171.58
  4. Step 4: Simplify right side
    460.30x = 118,451.97
  5. Step 5: Solve for x
    x = 118,451.97/460.30
  6. Step 6: Final answer
    x = 257.34

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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.