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Finding the Fourth Proportional to 662.91, 991.45 and 590.27

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Solution

The fourth proportional to 662.91, 991.45 and 590.27 is: 882.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.91 : 991.45 = 590.27 : x
  2. Step 2: Convert to fraction form
    662.91/991.45 = 590.27/x
  3. Step 3: Cross multiply
    662.91x = 991.45 × 590.27
  4. Step 4: Simplify right side
    662.91x = 585,223.19
  5. Step 5: Solve for x
    x = 585,223.19/662.91
  6. Step 6: Final answer
    x = 882.81

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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.