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Finding the Fourth Proportional to 248.96, 342.69 and 230.74

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Solution

The fourth proportional to 248.96, 342.69 and 230.74 is: 317.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    248.96 : 342.69 = 230.74 : x
  2. Step 2: Convert to fraction form
    248.96/342.69 = 230.74/x
  3. Step 3: Cross multiply
    248.96x = 342.69 × 230.74
  4. Step 4: Simplify right side
    248.96x = 79,070.58
  5. Step 5: Solve for x
    x = 79,070.58/248.96
  6. Step 6: Final answer
    x = 317.60

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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.