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Finding the Fourth Proportional to 1,038.96, 1,551.98 and 833.92

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Solution

The fourth proportional to 1,038.96, 1,551.98 and 833.92 is: 1,245.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038.96 : 1,551.98 = 833.92 : x
  2. Step 2: Convert to fraction form
    1,038.96/1,551.98 = 833.92/x
  3. Step 3: Cross multiply
    1,038.96x = 1,551.98 × 833.92
  4. Step 4: Simplify right side
    1,038.96x = 1,294,225.37
  5. Step 5: Solve for x
    x = 1,294,225.37/1,038.96
  6. Step 6: Final answer
    x = 1,245.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.