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Finding the Fourth Proportional to 954.06, 1,431.09 and 270.06

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Solution

The fourth proportional to 954.06, 1,431.09 and 270.06 is: 405.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.06 : 1,431.09 = 270.06 : x
  2. Step 2: Convert to fraction form
    954.06/1,431.09 = 270.06/x
  3. Step 3: Cross multiply
    954.06x = 1,431.09 × 270.06
  4. Step 4: Simplify right side
    954.06x = 386,480.17
  5. Step 5: Solve for x
    x = 386,480.17/954.06
  6. Step 6: Final answer
    x = 405.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.