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Finding the Fourth Proportional to 400.79, 552.62 and 322.26

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Solution

The fourth proportional to 400.79, 552.62 and 322.26 is: 444.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.79 : 552.62 = 322.26 : x
  2. Step 2: Convert to fraction form
    400.79/552.62 = 322.26/x
  3. Step 3: Cross multiply
    400.79x = 552.62 × 322.26
  4. Step 4: Simplify right side
    400.79x = 178,085.71
  5. Step 5: Solve for x
    x = 178,085.71/400.79
  6. Step 6: Final answer
    x = 444.34

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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.