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Finding the Fourth Proportional to 631.50, 943.11 and 545.01

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Solution

The fourth proportional to 631.50, 943.11 and 545.01 is: 813.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.50 : 943.11 = 545.01 : x
  2. Step 2: Convert to fraction form
    631.50/943.11 = 545.01/x
  3. Step 3: Cross multiply
    631.50x = 943.11 × 545.01
  4. Step 4: Simplify right side
    631.50x = 514,002.34
  5. Step 5: Solve for x
    x = 514,002.34/631.50
  6. Step 6: Final answer
    x = 813.94

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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.