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Finding the Fourth Proportional to 1,516.49, 2,274.86 and 476.50

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Solution

The fourth proportional to 1,516.49, 2,274.86 and 476.50 is: 714.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,516.49 : 2,274.86 = 476.50 : x
  2. Step 2: Convert to fraction form
    1,516.49/2,274.86 = 476.50/x
  3. Step 3: Cross multiply
    1,516.49x = 2,274.86 × 476.50
  4. Step 4: Simplify right side
    1,516.49x = 1,083,970.79
  5. Step 5: Solve for x
    x = 1,083,970.79/1,516.49
  6. Step 6: Final answer
    x = 714.79

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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.