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Finding the Fourth Proportional to 581.44, 801.42 and 498.64

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Solution

The fourth proportional to 581.44, 801.42 and 498.64 is: 687.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    581.44 : 801.42 = 498.64 : x
  2. Step 2: Convert to fraction form
    581.44/801.42 = 498.64/x
  3. Step 3: Cross multiply
    581.44x = 801.42 × 498.64
  4. Step 4: Simplify right side
    581.44x = 399,620.07
  5. Step 5: Solve for x
    x = 399,620.07/581.44
  6. Step 6: Final answer
    x = 687.29

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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.