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Finding the Fourth Proportional to 661.52, 910.22 and 543.06

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Solution

The fourth proportional to 661.52, 910.22 and 543.06 is: 747.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    661.52 : 910.22 = 543.06 : x
  2. Step 2: Convert to fraction form
    661.52/910.22 = 543.06/x
  3. Step 3: Cross multiply
    661.52x = 910.22 × 543.06
  4. Step 4: Simplify right side
    661.52x = 494,304.07
  5. Step 5: Solve for x
    x = 494,304.07/661.52
  6. Step 6: Final answer
    x = 747.22

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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.