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Finding the Fourth Proportional to 1,004.69, 1,507.05 and 274.34

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Solution

The fourth proportional to 1,004.69, 1,507.05 and 274.34 is: 411.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,004.69 : 1,507.05 = 274.34 : x
  2. Step 2: Convert to fraction form
    1,004.69/1,507.05 = 274.34/x
  3. Step 3: Cross multiply
    1,004.69x = 1,507.05 × 274.34
  4. Step 4: Simplify right side
    1,004.69x = 413,444.10
  5. Step 5: Solve for x
    x = 413,444.10/1,004.69
  6. Step 6: Final answer
    x = 411.51

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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.