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Finding the Fourth Proportional to 1,490.93, 2,057.12 and 893.52

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Solution

The fourth proportional to 1,490.93, 2,057.12 and 893.52 is: 1,232.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,490.93 : 2,057.12 = 893.52 : x
  2. Step 2: Convert to fraction form
    1,490.93/2,057.12 = 893.52/x
  3. Step 3: Cross multiply
    1,490.93x = 2,057.12 × 893.52
  4. Step 4: Simplify right side
    1,490.93x = 1,838,063.11
  5. Step 5: Solve for x
    x = 1,838,063.11/1,490.93
  6. Step 6: Final answer
    x = 1,232.83

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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.