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Finding the Fourth Proportional to 1,672.68, 2,308.23 and 964.51

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Solution

The fourth proportional to 1,672.68, 2,308.23 and 964.51 is: 1,330.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,672.68 : 2,308.23 = 964.51 : x
  2. Step 2: Convert to fraction form
    1,672.68/2,308.23 = 964.51/x
  3. Step 3: Cross multiply
    1,672.68x = 2,308.23 × 964.51
  4. Step 4: Simplify right side
    1,672.68x = 2,226,305.15
  5. Step 5: Solve for x
    x = 2,226,305.15/1,672.68
  6. Step 6: Final answer
    x = 1,330.98

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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.