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Finding the Fourth Proportional to 787.98, 1,179.44 and 714.14

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Solution

The fourth proportional to 787.98, 1,179.44 and 714.14 is: 1,068.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    787.98 : 1,179.44 = 714.14 : x
  2. Step 2: Convert to fraction form
    787.98/1,179.44 = 714.14/x
  3. Step 3: Cross multiply
    787.98x = 1,179.44 × 714.14
  4. Step 4: Simplify right side
    787.98x = 842,285.28
  5. Step 5: Solve for x
    x = 842,285.28/787.98
  6. Step 6: Final answer
    x = 1,068.92

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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.