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Finding the Fourth Proportional to 974.36, 1,461.68 and 357.88

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Solution

The fourth proportional to 974.36, 1,461.68 and 357.88 is: 536.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.36 : 1,461.68 = 357.88 : x
  2. Step 2: Convert to fraction form
    974.36/1,461.68 = 357.88/x
  3. Step 3: Cross multiply
    974.36x = 1,461.68 × 357.88
  4. Step 4: Simplify right side
    974.36x = 523,106.04
  5. Step 5: Solve for x
    x = 523,106.04/974.36
  6. Step 6: Final answer
    x = 536.87

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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.