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Finding the Fourth Proportional to 1,657.99, 2,486.17 and 964.85

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Solution

The fourth proportional to 1,657.99, 2,486.17 and 964.85 is: 1,446.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,657.99 : 2,486.17 = 964.85 : x
  2. Step 2: Convert to fraction form
    1,657.99/2,486.17 = 964.85/x
  3. Step 3: Cross multiply
    1,657.99x = 2,486.17 × 964.85
  4. Step 4: Simplify right side
    1,657.99x = 2,398,781.12
  5. Step 5: Solve for x
    x = 2,398,781.12/1,657.99
  6. Step 6: Final answer
    x = 1,446.80

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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.