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Finding the Fourth Proportional to 215.74, 297.50 and 174.22

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Solution

The fourth proportional to 215.74, 297.50 and 174.22 is: 240.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    215.74 : 297.50 = 174.22 : x
  2. Step 2: Convert to fraction form
    215.74/297.50 = 174.22/x
  3. Step 3: Cross multiply
    215.74x = 297.50 × 174.22
  4. Step 4: Simplify right side
    215.74x = 51,830.45
  5. Step 5: Solve for x
    x = 51,830.45/215.74
  6. Step 6: Final answer
    x = 240.24

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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.