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Finding the Fourth Proportional to 752.47, 1,129.18 and 367.51

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Solution

The fourth proportional to 752.47, 1,129.18 and 367.51 is: 551.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    752.47 : 1,129.18 = 367.51 : x
  2. Step 2: Convert to fraction form
    752.47/1,129.18 = 367.51/x
  3. Step 3: Cross multiply
    752.47x = 1,129.18 × 367.51
  4. Step 4: Simplify right side
    752.47x = 414,984.94
  5. Step 5: Solve for x
    x = 414,984.94/752.47
  6. Step 6: Final answer
    x = 551.50

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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.