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Finding the Fourth Proportional to 677.39, 1,014.86 and 630

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Solution

The fourth proportional to 677.39, 1,014.86 and 630 is: 943.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    677.39 : 1,014.86 = 630 : x
  2. Step 2: Convert to fraction form
    677.39/1,014.86 = 630/x
  3. Step 3: Cross multiply
    677.39x = 1,014.86 × 630
  4. Step 4: Simplify right side
    677.39x = 639,358.65
  5. Step 5: Solve for x
    x = 639,358.65/677.39
  6. Step 6: Final answer
    x = 943.86

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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.