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Finding the Fourth Proportional to 270.79, 373.94 and 215.93

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Solution

The fourth proportional to 270.79, 373.94 and 215.93 is: 298.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.79 : 373.94 = 215.93 : x
  2. Step 2: Convert to fraction form
    270.79/373.94 = 215.93/x
  3. Step 3: Cross multiply
    270.79x = 373.94 × 215.93
  4. Step 4: Simplify right side
    270.79x = 80,744.94
  5. Step 5: Solve for x
    x = 80,744.94/270.79
  6. Step 6: Final answer
    x = 298.19

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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.