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Finding the Fourth Proportional to 564.98, 845.64 and 290.69

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Solution

The fourth proportional to 564.98, 845.64 and 290.69 is: 435.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    564.98 : 845.64 = 290.69 : x
  2. Step 2: Convert to fraction form
    564.98/845.64 = 290.69/x
  3. Step 3: Cross multiply
    564.98x = 845.64 × 290.69
  4. Step 4: Simplify right side
    564.98x = 245,818.03
  5. Step 5: Solve for x
    x = 245,818.03/564.98
  6. Step 6: Final answer
    x = 435.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.