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Finding the Fourth Proportional to 1,480.12, 2,215.86 and 901.24

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Solution

The fourth proportional to 1,480.12, 2,215.86 and 901.24 is: 1,349.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,480.12 : 2,215.86 = 901.24 : x
  2. Step 2: Convert to fraction form
    1,480.12/2,215.86 = 901.24/x
  3. Step 3: Cross multiply
    1,480.12x = 2,215.86 × 901.24
  4. Step 4: Simplify right side
    1,480.12x = 1,997,021.67
  5. Step 5: Solve for x
    x = 1,997,021.67/1,480.12
  6. Step 6: Final answer
    x = 1,349.23

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1.5x scale

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.