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Finding the Fourth Proportional to 1,679.53, 2,317.63 and 933.49

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Solution

The fourth proportional to 1,679.53, 2,317.63 and 933.49 is: 1,288.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.53 : 2,317.63 = 933.49 : x
  2. Step 2: Convert to fraction form
    1,679.53/2,317.63 = 933.49/x
  3. Step 3: Cross multiply
    1,679.53x = 2,317.63 × 933.49
  4. Step 4: Simplify right side
    1,679.53x = 2,163,484.43
  5. Step 5: Solve for x
    x = 2,163,484.43/1,679.53
  6. Step 6: Final answer
    x = 1,288.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.