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Finding the Fourth Proportional to 617.02, 924.97 and 419.43

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Solution

The fourth proportional to 617.02, 924.97 and 419.43 is: 628.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.02 : 924.97 = 419.43 : x
  2. Step 2: Convert to fraction form
    617.02/924.97 = 419.43/x
  3. Step 3: Cross multiply
    617.02x = 924.97 × 419.43
  4. Step 4: Simplify right side
    617.02x = 387,960.17
  5. Step 5: Solve for x
    x = 387,960.17/617.02
  6. Step 6: Final answer
    x = 628.76

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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.