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Finding the Fourth Proportional to 1,459.31, 2,188.96 and 637.65

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Solution

The fourth proportional to 1,459.31, 2,188.96 and 637.65 is: 956.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,459.31 : 2,188.96 = 637.65 : x
  2. Step 2: Convert to fraction form
    1,459.31/2,188.96 = 637.65/x
  3. Step 3: Cross multiply
    1,459.31x = 2,188.96 × 637.65
  4. Step 4: Simplify right side
    1,459.31x = 1,395,787.30
  5. Step 5: Solve for x
    x = 1,395,787.30/1,459.31
  6. Step 6: Final answer
    x = 956.47

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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.