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Finding the Fourth Proportional to 1,458.96, 2,188.86 and 637.38

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Solution

The fourth proportional to 1,458.96, 2,188.86 and 637.38 is: 956.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,458.96 : 2,188.86 = 637.38 : x
  2. Step 2: Convert to fraction form
    1,458.96/2,188.86 = 637.38/x
  3. Step 3: Cross multiply
    1,458.96x = 2,188.86 × 637.38
  4. Step 4: Simplify right side
    1,458.96x = 1,395,135.59
  5. Step 5: Solve for x
    x = 1,395,135.59/1,458.96
  6. Step 6: Final answer
    x = 956.25

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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.