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Finding the Fourth Proportional to 296.15, 407.73 and 251.79

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Solution

The fourth proportional to 296.15, 407.73 and 251.79 is: 346.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.15 : 407.73 = 251.79 : x
  2. Step 2: Convert to fraction form
    296.15/407.73 = 251.79/x
  3. Step 3: Cross multiply
    296.15x = 407.73 × 251.79
  4. Step 4: Simplify right side
    296.15x = 102,662.34
  5. Step 5: Solve for x
    x = 102,662.34/296.15
  6. Step 6: Final answer
    x = 346.66

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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.