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Finding the Fourth Proportional to 752.02, 1,037.70 and 486.52

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Solution

The fourth proportional to 752.02, 1,037.70 and 486.52 is: 671.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    752.02 : 1,037.70 = 486.52 : x
  2. Step 2: Convert to fraction form
    752.02/1,037.70 = 486.52/x
  3. Step 3: Cross multiply
    752.02x = 1,037.70 × 486.52
  4. Step 4: Simplify right side
    752.02x = 504,861.80
  5. Step 5: Solve for x
    x = 504,861.80/752.02
  6. Step 6: Final answer
    x = 671.34

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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.