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Finding the Fourth Proportional to 703.24, 1,055.34 and 361.48

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Solution

The fourth proportional to 703.24, 1,055.34 and 361.48 is: 542.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.24 : 1,055.34 = 361.48 : x
  2. Step 2: Convert to fraction form
    703.24/1,055.34 = 361.48/x
  3. Step 3: Cross multiply
    703.24x = 1,055.34 × 361.48
  4. Step 4: Simplify right side
    703.24x = 381,484.30
  5. Step 5: Solve for x
    x = 381,484.30/703.24
  6. Step 6: Final answer
    x = 542.47

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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.