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Finding the Fourth Proportional to 693.62, 962.10 and 668.68

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Solution

The fourth proportional to 693.62, 962.10 and 668.68 is: 927.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.62 : 962.10 = 668.68 : x
  2. Step 2: Convert to fraction form
    693.62/962.10 = 668.68/x
  3. Step 3: Cross multiply
    693.62x = 962.10 × 668.68
  4. Step 4: Simplify right side
    693.62x = 643,333.68
  5. Step 5: Solve for x
    x = 643,333.68/693.62
  6. Step 6: Final answer
    x = 927.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.