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Finding the Fourth Proportional to 270.34, 405.15 and 173.98

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Solution

The fourth proportional to 270.34, 405.15 and 173.98 is: 260.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    270.34 : 405.15 = 173.98 : x
  2. Step 2: Convert to fraction form
    270.34/405.15 = 173.98/x
  3. Step 3: Cross multiply
    270.34x = 405.15 × 173.98
  4. Step 4: Simplify right side
    270.34x = 70,488.00
  5. Step 5: Solve for x
    x = 70,488.00/270.34
  6. Step 6: Final answer
    x = 260.74

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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.