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Finding the Fourth Proportional to 543.79, 750.18 and 322.62

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Solution

The fourth proportional to 543.79, 750.18 and 322.62 is: 445.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.79 : 750.18 = 322.62 : x
  2. Step 2: Convert to fraction form
    543.79/750.18 = 322.62/x
  3. Step 3: Cross multiply
    543.79x = 750.18 × 322.62
  4. Step 4: Simplify right side
    543.79x = 242,021.47
  5. Step 5: Solve for x
    x = 242,021.47/543.79
  6. Step 6: Final answer
    x = 445.06

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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.