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Finding the Fourth Proportional to 952.46, 1,429.41 and 405.03

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Solution

The fourth proportional to 952.46, 1,429.41 and 405.03 is: 607.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    952.46 : 1,429.41 = 405.03 : x
  2. Step 2: Convert to fraction form
    952.46/1,429.41 = 405.03/x
  3. Step 3: Cross multiply
    952.46x = 1,429.41 × 405.03
  4. Step 4: Simplify right side
    952.46x = 578,953.93
  5. Step 5: Solve for x
    x = 578,953.93/952.46
  6. Step 6: Final answer
    x = 607.85

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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.