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Finding the Fourth Proportional to 631.98, 943.56 and 545.22

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Solution

The fourth proportional to 631.98, 943.56 and 545.22 is: 814.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.98 : 943.56 = 545.22 : x
  2. Step 2: Convert to fraction form
    631.98/943.56 = 545.22/x
  3. Step 3: Cross multiply
    631.98x = 943.56 × 545.22
  4. Step 4: Simplify right side
    631.98x = 514,447.78
  5. Step 5: Solve for x
    x = 514,447.78/631.98
  6. Step 6: Final answer
    x = 814.03

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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.