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Finding the Fourth Proportional to 657.51, 986.89 and 483.65

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Solution

The fourth proportional to 657.51, 986.89 and 483.65 is: 725.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    657.51 : 986.89 = 483.65 : x
  2. Step 2: Convert to fraction form
    657.51/986.89 = 483.65/x
  3. Step 3: Cross multiply
    657.51x = 986.89 × 483.65
  4. Step 4: Simplify right side
    657.51x = 477,309.35
  5. Step 5: Solve for x
    x = 477,309.35/657.51
  6. Step 6: Final answer
    x = 725.93

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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.