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Finding the Fourth Proportional to 1,792.57, 2,688.98 and 476.31

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Solution

The fourth proportional to 1,792.57, 2,688.98 and 476.31 is: 714.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,792.57 : 2,688.98 = 476.31 : x
  2. Step 2: Convert to fraction form
    1,792.57/2,688.98 = 476.31/x
  3. Step 3: Cross multiply
    1,792.57x = 2,688.98 × 476.31
  4. Step 4: Simplify right side
    1,792.57x = 1,280,776.49
  5. Step 5: Solve for x
    x = 1,280,776.49/1,792.57
  6. Step 6: Final answer
    x = 714.49

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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.