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Finding the Fourth Proportional to 1,792.46, 2,688.81 and 476.20

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Solution

The fourth proportional to 1,792.46, 2,688.81 and 476.20 is: 714.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,792.46 : 2,688.81 = 476.20 : x
  2. Step 2: Convert to fraction form
    1,792.46/2,688.81 = 476.20/x
  3. Step 3: Cross multiply
    1,792.46x = 2,688.81 × 476.20
  4. Step 4: Simplify right side
    1,792.46x = 1,280,400.45
  5. Step 5: Solve for x
    x = 1,280,400.45/1,792.46
  6. Step 6: Final answer
    x = 714.32

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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.