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Finding the Fourth Proportional to 1,217, 1,824.08 and 558.18

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Solution

The fourth proportional to 1,217, 1,824.08 and 558.18 is: 836.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217 : 1,824.08 = 558.18 : x
  2. Step 2: Convert to fraction form
    1,217/1,824.08 = 558.18/x
  3. Step 3: Cross multiply
    1,217x = 1,824.08 × 558.18
  4. Step 4: Simplify right side
    1,217x = 1,018,164.97
  5. Step 5: Solve for x
    x = 1,018,164.97/1,217
  6. Step 6: Final answer
    x = 836.62

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.