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Finding the Fourth Proportional to 883.37, 1,216.37 and 717.30

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Solution

The fourth proportional to 883.37, 1,216.37 and 717.30 is: 987.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    883.37 : 1,216.37 = 717.30 : x
  2. Step 2: Convert to fraction form
    883.37/1,216.37 = 717.30/x
  3. Step 3: Cross multiply
    883.37x = 1,216.37 × 717.30
  4. Step 4: Simplify right side
    883.37x = 872,503.99
  5. Step 5: Solve for x
    x = 872,503.99/883.37
  6. Step 6: Final answer
    x = 987.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.