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Finding the Fourth Proportional to 937.09, 1,403.55 and 662.35

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Solution

The fourth proportional to 937.09, 1,403.55 and 662.35 is: 992.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    937.09 : 1,403.55 = 662.35 : x
  2. Step 2: Convert to fraction form
    937.09/1,403.55 = 662.35/x
  3. Step 3: Cross multiply
    937.09x = 1,403.55 × 662.35
  4. Step 4: Simplify right side
    937.09x = 929,639.69
  5. Step 5: Solve for x
    x = 929,639.69/937.09
  6. Step 6: Final answer
    x = 992.05

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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.