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Finding the Fourth Proportional to 641.21, 959.99 and 590.18

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Solution

The fourth proportional to 641.21, 959.99 and 590.18 is: 883.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    641.21 : 959.99 = 590.18 : x
  2. Step 2: Convert to fraction form
    641.21/959.99 = 590.18/x
  3. Step 3: Cross multiply
    641.21x = 959.99 × 590.18
  4. Step 4: Simplify right side
    641.21x = 566,559.15
  5. Step 5: Solve for x
    x = 566,559.15/641.21
  6. Step 6: Final answer
    x = 883.59

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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.