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Finding the Fourth Proportional to 713.57, 1,068.71 and 608.31

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Solution

The fourth proportional to 713.57, 1,068.71 and 608.31 is: 911.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.57 : 1,068.71 = 608.31 : x
  2. Step 2: Convert to fraction form
    713.57/1,068.71 = 608.31/x
  3. Step 3: Cross multiply
    713.57x = 1,068.71 × 608.31
  4. Step 4: Simplify right side
    713.57x = 650,103.94
  5. Step 5: Solve for x
    x = 650,103.94/713.57
  6. Step 6: Final answer
    x = 911.06

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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.