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Finding the Fourth Proportional to 717.00, 986.88 and 611.75

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Solution

The fourth proportional to 717.00, 986.88 and 611.75 is: 842.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.00 : 986.88 = 611.75 : x
  2. Step 2: Convert to fraction form
    717.00/986.88 = 611.75/x
  3. Step 3: Cross multiply
    717.00x = 986.88 × 611.75
  4. Step 4: Simplify right side
    717.00x = 603,728.60
  5. Step 5: Solve for x
    x = 603,728.60/717.00
  6. Step 6: Final answer
    x = 842.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.