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Finding the Fourth Proportional to 214.51, 295.90 and 131.55

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Solution

The fourth proportional to 214.51, 295.90 and 131.55 is: 181.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    214.51 : 295.90 = 131.55 : x
  2. Step 2: Convert to fraction form
    214.51/295.90 = 131.55/x
  3. Step 3: Cross multiply
    214.51x = 295.90 × 131.55
  4. Step 4: Simplify right side
    214.51x = 38,925.32
  5. Step 5: Solve for x
    x = 38,925.32/214.51
  6. Step 6: Final answer
    x = 181.46

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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.