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Finding the Fourth Proportional to 890.75, 1,332.77 and 617.37

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Solution

The fourth proportional to 890.75, 1,332.77 and 617.37 is: 923.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    890.75 : 1,332.77 = 617.37 : x
  2. Step 2: Convert to fraction form
    890.75/1,332.77 = 617.37/x
  3. Step 3: Cross multiply
    890.75x = 1,332.77 × 617.37
  4. Step 4: Simplify right side
    890.75x = 822,813.76
  5. Step 5: Solve for x
    x = 822,813.76/890.75
  6. Step 6: Final answer
    x = 923.74

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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.