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Finding the Fourth Proportional to 896.07, 1,236.58 and 497.74

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Solution

The fourth proportional to 896.07, 1,236.58 and 497.74 is: 686.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.07 : 1,236.58 = 497.74 : x
  2. Step 2: Convert to fraction form
    896.07/1,236.58 = 497.74/x
  3. Step 3: Cross multiply
    896.07x = 1,236.58 × 497.74
  4. Step 4: Simplify right side
    896.07x = 615,489.15
  5. Step 5: Solve for x
    x = 615,489.15/896.07
  6. Step 6: Final answer
    x = 686.88

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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.