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Finding the Fourth Proportional to 1,792.13, 2,688.19 and 493.59

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Solution

The fourth proportional to 1,792.13, 2,688.19 and 493.59 is: 740.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,792.13 : 2,688.19 = 493.59 : x
  2. Step 2: Convert to fraction form
    1,792.13/2,688.19 = 493.59/x
  3. Step 3: Cross multiply
    1,792.13x = 2,688.19 × 493.59
  4. Step 4: Simplify right side
    1,792.13x = 1,326,872.55
  5. Step 5: Solve for x
    x = 1,326,872.55/1,792.13
  6. Step 6: Final answer
    x = 740.39

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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.