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Finding the Fourth Proportional to 1,256.32, 1,730.46 and 901.72

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Solution

The fourth proportional to 1,256.32, 1,730.46 and 901.72 is: 1,242.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.32 : 1,730.46 = 901.72 : x
  2. Step 2: Convert to fraction form
    1,256.32/1,730.46 = 901.72/x
  3. Step 3: Cross multiply
    1,256.32x = 1,730.46 × 901.72
  4. Step 4: Simplify right side
    1,256.32x = 1,560,390.39
  5. Step 5: Solve for x
    x = 1,560,390.39/1,256.32
  6. Step 6: Final answer
    x = 1,242.03

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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.