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Finding the Fourth Proportional to 460.12, 690.34 and 171.60

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Solution

The fourth proportional to 460.12, 690.34 and 171.60 is: 257.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    460.12 : 690.34 = 171.60 : x
  2. Step 2: Convert to fraction form
    460.12/690.34 = 171.60/x
  3. Step 3: Cross multiply
    460.12x = 690.34 × 171.60
  4. Step 4: Simplify right side
    460.12x = 118,462.34
  5. Step 5: Solve for x
    x = 118,462.34/460.12
  6. Step 6: Final answer
    x = 257.46

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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.