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Finding the Fourth Proportional to 543.83, 812.10 and 426.96

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Solution

The fourth proportional to 543.83, 812.10 and 426.96 is: 637.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    543.83 : 812.10 = 426.96 : x
  2. Step 2: Convert to fraction form
    543.83/812.10 = 426.96/x
  3. Step 3: Cross multiply
    543.83x = 812.10 × 426.96
  4. Step 4: Simplify right side
    543.83x = 346,734.22
  5. Step 5: Solve for x
    x = 346,734.22/543.83
  6. Step 6: Final answer
    x = 637.58

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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.