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Finding the Fourth Proportional to 1,156, 1,734.56 and 506.65

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Solution

The fourth proportional to 1,156, 1,734.56 and 506.65 is: 760.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156 : 1,734.56 = 506.65 : x
  2. Step 2: Convert to fraction form
    1,156/1,734.56 = 506.65/x
  3. Step 3: Cross multiply
    1,156x = 1,734.56 × 506.65
  4. Step 4: Simplify right side
    1,156x = 878,814.82
  5. Step 5: Solve for x
    x = 878,814.82/1,156
  6. Step 6: Final answer
    x = 760.22

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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.