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Finding the Fourth Proportional to 696, 959.76 and 626.16

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Solution

The fourth proportional to 696, 959.76 and 626.16 is: 863.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    696 : 959.76 = 626.16 : x
  2. Step 2: Convert to fraction form
    696/959.76 = 626.16/x
  3. Step 3: Cross multiply
    696x = 959.76 × 626.16
  4. Step 4: Simplify right side
    696x = 600,963.32
  5. Step 5: Solve for x
    x = 600,963.32/696
  6. Step 6: Final answer
    x = 863.45

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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.