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Finding the Fourth Proportional to 214.32, 295.62 and 156

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Solution

The fourth proportional to 214.32, 295.62 and 156 is: 215.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    214.32 : 295.62 = 156 : x
  2. Step 2: Convert to fraction form
    214.32/295.62 = 156/x
  3. Step 3: Cross multiply
    214.32x = 295.62 × 156
  4. Step 4: Simplify right side
    214.32x = 46,116.72
  5. Step 5: Solve for x
    x = 46,116.72/214.32
  6. Step 6: Final answer
    x = 215.18

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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.