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Finding the Fourth Proportional to 174.69, 240.55 and 156.26

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Solution

The fourth proportional to 174.69, 240.55 and 156.26 is: 215.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.69 : 240.55 = 156.26 : x
  2. Step 2: Convert to fraction form
    174.69/240.55 = 156.26/x
  3. Step 3: Cross multiply
    174.69x = 240.55 × 156.26
  4. Step 4: Simplify right side
    174.69x = 37,588.34
  5. Step 5: Solve for x
    x = 37,588.34/174.69
  6. Step 6: Final answer
    x = 215.17

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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.