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Finding the Fourth Proportional to 974.51, 1,462.22 and 426.62

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Solution

The fourth proportional to 974.51, 1,462.22 and 426.62 is: 640.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    974.51 : 1,462.22 = 426.62 : x
  2. Step 2: Convert to fraction form
    974.51/1,462.22 = 426.62/x
  3. Step 3: Cross multiply
    974.51x = 1,462.22 × 426.62
  4. Step 4: Simplify right side
    974.51x = 623,812.30
  5. Step 5: Solve for x
    x = 623,812.30/974.51
  6. Step 6: Final answer
    x = 640.13

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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.