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Finding the Fourth Proportional to 884.04, 1,220.32 and 663.63

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Solution

The fourth proportional to 884.04, 1,220.32 and 663.63 is: 916.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.04 : 1,220.32 = 663.63 : x
  2. Step 2: Convert to fraction form
    884.04/1,220.32 = 663.63/x
  3. Step 3: Cross multiply
    884.04x = 1,220.32 × 663.63
  4. Step 4: Simplify right side
    884.04x = 809,840.96
  5. Step 5: Solve for x
    x = 809,840.96/884.04
  6. Step 6: Final answer
    x = 916.07

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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.