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Finding the Fourth Proportional to 884.63, 1,220.62 and 752.39

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Solution

The fourth proportional to 884.63, 1,220.62 and 752.39 is: 1,038.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.63 : 1,220.62 = 752.39 : x
  2. Step 2: Convert to fraction form
    884.63/1,220.62 = 752.39/x
  3. Step 3: Cross multiply
    884.63x = 1,220.62 × 752.39
  4. Step 4: Simplify right side
    884.63x = 918,380.29
  5. Step 5: Solve for x
    x = 918,380.29/884.63
  6. Step 6: Final answer
    x = 1,038.15

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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.