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Finding the Fourth Proportional to 155.37, 214.37 and 124.31

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Solution

The fourth proportional to 155.37, 214.37 and 124.31 is: 171.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    155.37 : 214.37 = 124.31 : x
  2. Step 2: Convert to fraction form
    155.37/214.37 = 124.31/x
  3. Step 3: Cross multiply
    155.37x = 214.37 × 124.31
  4. Step 4: Simplify right side
    155.37x = 26,648.46
  5. Step 5: Solve for x
    x = 26,648.46/155.37
  6. Step 6: Final answer
    x = 171.52

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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.