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Finding the Fourth Proportional to 752.02, 1,128.04 and 493.66

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Solution

The fourth proportional to 752.02, 1,128.04 and 493.66 is: 740.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    752.02 : 1,128.04 = 493.66 : x
  2. Step 2: Convert to fraction form
    752.02/1,128.04 = 493.66/x
  3. Step 3: Cross multiply
    752.02x = 1,128.04 × 493.66
  4. Step 4: Simplify right side
    752.02x = 556,868.40
  5. Step 5: Solve for x
    x = 556,868.40/752.02
  6. Step 6: Final answer
    x = 740.50

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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.