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Finding the Fourth Proportional to 967.28, 1,335.18 and 603.76

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Solution

The fourth proportional to 967.28, 1,335.18 and 603.76 is: 833.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    967.28 : 1,335.18 = 603.76 : x
  2. Step 2: Convert to fraction form
    967.28/1,335.18 = 603.76/x
  3. Step 3: Cross multiply
    967.28x = 1,335.18 × 603.76
  4. Step 4: Simplify right side
    967.28x = 806,128.28
  5. Step 5: Solve for x
    x = 806,128.28/967.28
  6. Step 6: Final answer
    x = 833.40

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Double scale
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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.