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Finding the Fourth Proportional to 884.29, 1,219.63 and 589.05

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Solution

The fourth proportional to 884.29, 1,219.63 and 589.05 is: 812.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.29 : 1,219.63 = 589.05 : x
  2. Step 2: Convert to fraction form
    884.29/1,219.63 = 589.05/x
  3. Step 3: Cross multiply
    884.29x = 1,219.63 × 589.05
  4. Step 4: Simplify right side
    884.29x = 718,423.05
  5. Step 5: Solve for x
    x = 718,423.05/884.29
  6. Step 6: Final answer
    x = 812.43

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Half scale
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Double scale
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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.