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Finding the Fourth Proportional to 619.83, 930.32 and 617.51

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Solution

The fourth proportional to 619.83, 930.32 and 617.51 is: 926.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.83 : 930.32 = 617.51 : x
  2. Step 2: Convert to fraction form
    619.83/930.32 = 617.51/x
  3. Step 3: Cross multiply
    619.83x = 930.32 × 617.51
  4. Step 4: Simplify right side
    619.83x = 574,474.16
  5. Step 5: Solve for x
    x = 574,474.16/619.83
  6. Step 6: Final answer
    x = 926.83

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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.