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Finding the Fourth Proportional to 642.43, 957.22 and 601.39

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Solution

The fourth proportional to 642.43, 957.22 and 601.39 is: 896.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    642.43 : 957.22 = 601.39 : x
  2. Step 2: Convert to fraction form
    642.43/957.22 = 601.39/x
  3. Step 3: Cross multiply
    642.43x = 957.22 × 601.39
  4. Step 4: Simplify right side
    642.43x = 575,657.75
  5. Step 5: Solve for x
    x = 575,657.75/642.43
  6. Step 6: Final answer
    x = 896.07

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.