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Finding the Fourth Proportional to 646.56, 889.92 and 597.96

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Solution

The fourth proportional to 646.56, 889.92 and 597.96 is: 823.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    646.56 : 889.92 = 597.96 : x
  2. Step 2: Convert to fraction form
    646.56/889.92 = 597.96/x
  3. Step 3: Cross multiply
    646.56x = 889.92 × 597.96
  4. Step 4: Simplify right side
    646.56x = 532,136.56
  5. Step 5: Solve for x
    x = 532,136.56/646.56
  6. Step 6: Final answer
    x = 823.03

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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.