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Finding the Fourth Proportional to 967.19, 1,335.30 and 636.19

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Solution

The fourth proportional to 967.19, 1,335.30 and 636.19 is: 878.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.19 : 1,335.30 = 636.19 : x
  2. Step 2: Convert to fraction form
    967.19/1,335.30 = 636.19/x
  3. Step 3: Cross multiply
    967.19x = 1,335.30 × 636.19
  4. Step 4: Simplify right side
    967.19x = 849,498.78
  5. Step 5: Solve for x
    x = 849,498.78/967.19
  6. Step 6: Final answer
    x = 878.32

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1.5x scale

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.