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Finding the Fourth Proportional to 884.29, 1,219.47 and 585.40

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Solution

The fourth proportional to 884.29, 1,219.47 and 585.40 is: 807.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    884.29 : 1,219.47 = 585.40 : x
  2. Step 2: Convert to fraction form
    884.29/1,219.47 = 585.40/x
  3. Step 3: Cross multiply
    884.29x = 1,219.47 × 585.40
  4. Step 4: Simplify right side
    884.29x = 713,880.79
  5. Step 5: Solve for x
    x = 713,880.79/884.29
  6. Step 6: Final answer
    x = 807.29

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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.