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Finding the Fourth Proportional to 581.36, 865.94 and 580.24

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Solution

The fourth proportional to 581.36, 865.94 and 580.24 is: 864.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.36 : 865.94 = 580.24 : x
  2. Step 2: Convert to fraction form
    581.36/865.94 = 580.24/x
  3. Step 3: Cross multiply
    581.36x = 865.94 × 580.24
  4. Step 4: Simplify right side
    581.36x = 502,453.03
  5. Step 5: Solve for x
    x = 502,453.03/581.36
  6. Step 6: Final answer
    x = 864.27

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.