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Finding the Fourth Proportional to 1,250.63, 1,725.53 and 753.15

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Solution

The fourth proportional to 1,250.63, 1,725.53 and 753.15 is: 1,039.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,250.63 : 1,725.53 = 753.15 : x
  2. Step 2: Convert to fraction form
    1,250.63/1,725.53 = 753.15/x
  3. Step 3: Cross multiply
    1,250.63x = 1,725.53 × 753.15
  4. Step 4: Simplify right side
    1,250.63x = 1,299,579.15
  5. Step 5: Solve for x
    x = 1,299,579.15/1,250.63
  6. Step 6: Final answer
    x = 1,039.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.