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Finding the Fourth Proportional to 957.00, 1,442.02 and 787.47

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Solution

The fourth proportional to 957.00, 1,442.02 and 787.47 is: 1,186.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    957.00 : 1,442.02 = 787.47 : x
  2. Step 2: Convert to fraction form
    957.00/1,442.02 = 787.47/x
  3. Step 3: Cross multiply
    957.00x = 1,442.02 × 787.47
  4. Step 4: Simplify right side
    957.00x = 1,135,546.38
  5. Step 5: Solve for x
    x = 1,135,546.38/957.00
  6. Step 6: Final answer
    x = 1,186.57

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.