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Finding the Fourth Proportional to 954.90, 1,431.53 and 927.36

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Solution

The fourth proportional to 954.90, 1,431.53 and 927.36 is: 1,390.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.90 : 1,431.53 = 927.36 : x
  2. Step 2: Convert to fraction form
    954.90/1,431.53 = 927.36/x
  3. Step 3: Cross multiply
    954.90x = 1,431.53 × 927.36
  4. Step 4: Simplify right side
    954.90x = 1,327,539.02
  5. Step 5: Solve for x
    x = 1,327,539.02/954.90
  6. Step 6: Final answer
    x = 1,390.24

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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.