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Finding the Fourth Proportional to 590.31, 884.91 and 407.45

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Solution

The fourth proportional to 590.31, 884.91 and 407.45 is: 610.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.31 : 884.91 = 407.45 : x
  2. Step 2: Convert to fraction form
    590.31/884.91 = 407.45/x
  3. Step 3: Cross multiply
    590.31x = 884.91 × 407.45
  4. Step 4: Simplify right side
    590.31x = 360,556.58
  5. Step 5: Solve for x
    x = 360,556.58/590.31
  6. Step 6: Final answer
    x = 610.79

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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.