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Finding the Fourth Proportional to 590.90, 885.13 and 418.37

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Solution

The fourth proportional to 590.90, 885.13 and 418.37 is: 626.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    590.90 : 885.13 = 418.37 : x
  2. Step 2: Convert to fraction form
    590.90/885.13 = 418.37/x
  3. Step 3: Cross multiply
    590.90x = 885.13 × 418.37
  4. Step 4: Simplify right side
    590.90x = 370,306.37
  5. Step 5: Solve for x
    x = 370,306.37/590.90
  6. Step 6: Final answer
    x = 626.69

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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.