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Finding the Fourth Proportional to 901.62, 1,244.24 and 487.62

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Solution

The fourth proportional to 901.62, 1,244.24 and 487.62 is: 672.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    901.62 : 1,244.24 = 487.62 : x
  2. Step 2: Convert to fraction form
    901.62/1,244.24 = 487.62/x
  3. Step 3: Cross multiply
    901.62x = 1,244.24 × 487.62
  4. Step 4: Simplify right side
    901.62x = 606,713.87
  5. Step 5: Solve for x
    x = 606,713.87/901.62
  6. Step 6: Final answer
    x = 672.92

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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.