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Finding the Fourth Proportional to 935.23, 1,402.86 and 662.80

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Solution

The fourth proportional to 935.23, 1,402.86 and 662.80 is: 994.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    935.23 : 1,402.86 = 662.80 : x
  2. Step 2: Convert to fraction form
    935.23/1,402.86 = 662.80/x
  3. Step 3: Cross multiply
    935.23x = 1,402.86 × 662.80
  4. Step 4: Simplify right side
    935.23x = 929,815.61
  5. Step 5: Solve for x
    x = 929,815.61/935.23
  6. Step 6: Final answer
    x = 994.21

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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.