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Finding the Fourth Proportional to 268.60, 370.60 and 156.52

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Solution

The fourth proportional to 268.60, 370.60 and 156.52 is: 215.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    268.60 : 370.60 = 156.52 : x
  2. Step 2: Convert to fraction form
    268.60/370.60 = 156.52/x
  3. Step 3: Cross multiply
    268.60x = 370.60 × 156.52
  4. Step 4: Simplify right side
    268.60x = 58,006.31
  5. Step 5: Solve for x
    x = 58,006.31/268.60
  6. Step 6: Final answer
    x = 215.96

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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.