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Finding the Fourth Proportional to 1,259.38, 1,886.31 and 893.05

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Solution

The fourth proportional to 1,259.38, 1,886.31 and 893.05 is: 1,337.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259.38 : 1,886.31 = 893.05 : x
  2. Step 2: Convert to fraction form
    1,259.38/1,886.31 = 893.05/x
  3. Step 3: Cross multiply
    1,259.38x = 1,886.31 × 893.05
  4. Step 4: Simplify right side
    1,259.38x = 1,684,569.15
  5. Step 5: Solve for x
    x = 1,684,569.15/1,259.38
  6. Step 6: Final answer
    x = 1,337.62

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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.