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Finding the Fourth Proportional to 975.66, 1,463.67 and 628.83

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Solution

The fourth proportional to 975.66, 1,463.67 and 628.83 is: 943.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    975.66 : 1,463.67 = 628.83 : x
  2. Step 2: Convert to fraction form
    975.66/1,463.67 = 628.83/x
  3. Step 3: Cross multiply
    975.66x = 1,463.67 × 628.83
  4. Step 4: Simplify right side
    975.66x = 920,399.61
  5. Step 5: Solve for x
    x = 920,399.61/975.66
  6. Step 6: Final answer
    x = 943.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.