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Finding the Fourth Proportional to 967.68, 1,336.51 and 637.59

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Solution

The fourth proportional to 967.68, 1,336.51 and 637.59 is: 880.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.68 : 1,336.51 = 637.59 : x
  2. Step 2: Convert to fraction form
    967.68/1,336.51 = 637.59/x
  3. Step 3: Cross multiply
    967.68x = 1,336.51 × 637.59
  4. Step 4: Simplify right side
    967.68x = 852,145.41
  5. Step 5: Solve for x
    x = 852,145.41/967.68
  6. Step 6: Final answer
    x = 880.61

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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.