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Finding the Fourth Proportional to 896.28, 1,236.76 and 497.88

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Solution

The fourth proportional to 896.28, 1,236.76 and 497.88 is: 687.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.28 : 1,236.76 = 497.88 : x
  2. Step 2: Convert to fraction form
    896.28/1,236.76 = 497.88/x
  3. Step 3: Cross multiply
    896.28x = 1,236.76 × 497.88
  4. Step 4: Simplify right side
    896.28x = 615,758.07
  5. Step 5: Solve for x
    x = 615,758.07/896.28
  6. Step 6: Final answer
    x = 687.02

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Double scale
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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.