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Finding the Fourth Proportional to 974.21, 1,461.36 and 541.04

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Solution

The fourth proportional to 974.21, 1,461.36 and 541.04 is: 811.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.21 : 1,461.36 = 541.04 : x
  2. Step 2: Convert to fraction form
    974.21/1,461.36 = 541.04/x
  3. Step 3: Cross multiply
    974.21x = 1,461.36 × 541.04
  4. Step 4: Simplify right side
    974.21x = 790,654.21
  5. Step 5: Solve for x
    x = 790,654.21/974.21
  6. Step 6: Final answer
    x = 811.58

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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.