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Finding the Fourth Proportional to 717.76, 993.36 and 700.50

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Solution

The fourth proportional to 717.76, 993.36 and 700.50 is: 969.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    717.76 : 993.36 = 700.50 : x
  2. Step 2: Convert to fraction form
    717.76/993.36 = 700.50/x
  3. Step 3: Cross multiply
    717.76x = 993.36 × 700.50
  4. Step 4: Simplify right side
    717.76x = 695,851.30
  5. Step 5: Solve for x
    x = 695,851.30/717.76
  6. Step 6: Final answer
    x = 969.47

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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.