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Finding the Fourth Proportional to 954.66, 1,431.99 and 305.44

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Solution

The fourth proportional to 954.66, 1,431.99 and 305.44 is: 458.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    954.66 : 1,431.99 = 305.44 : x
  2. Step 2: Convert to fraction form
    954.66/1,431.99 = 305.44/x
  3. Step 3: Cross multiply
    954.66x = 1,431.99 × 305.44
  4. Step 4: Simplify right side
    954.66x = 437,385.50
  5. Step 5: Solve for x
    x = 437,385.50/954.66
  6. Step 6: Final answer
    x = 458.16

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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.