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Finding the Fourth Proportional to 270.71, 373.63 and 215.87

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Solution

The fourth proportional to 270.71, 373.63 and 215.87 is: 297.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.71 : 373.63 = 215.87 : x
  2. Step 2: Convert to fraction form
    270.71/373.63 = 215.87/x
  3. Step 3: Cross multiply
    270.71x = 373.63 × 215.87
  4. Step 4: Simplify right side
    270.71x = 80,655.90
  5. Step 5: Solve for x
    x = 80,655.90/270.71
  6. Step 6: Final answer
    x = 297.95

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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.