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Finding the Fourth Proportional to 1,312.50, 1,967.94 and 1,150.50

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Solution

The fourth proportional to 1,312.50, 1,967.94 and 1,150.50 is: 1,725.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312.50 : 1,967.94 = 1,150.50 : x
  2. Step 2: Convert to fraction form
    1,312.50/1,967.94 = 1,150.50/x
  3. Step 3: Cross multiply
    1,312.50x = 1,967.94 × 1,150.50
  4. Step 4: Simplify right side
    1,312.50x = 2,264,114.97
  5. Step 5: Solve for x
    x = 2,264,114.97/1,312.50
  6. Step 6: Final answer
    x = 1,725.04

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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.