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Finding the Fourth Proportional to 587.30, 810.44 and 325.31

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Solution

The fourth proportional to 587.30, 810.44 and 325.31 is: 448.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    587.30 : 810.44 = 325.31 : x
  2. Step 2: Convert to fraction form
    587.30/810.44 = 325.31/x
  3. Step 3: Cross multiply
    587.30x = 810.44 × 325.31
  4. Step 4: Simplify right side
    587.30x = 263,644.24
  5. Step 5: Solve for x
    x = 263,644.24/587.30
  6. Step 6: Final answer
    x = 448.91

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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.