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Finding the Fourth Proportional to 703.53, 1,055.28 and 374.58

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Solution

The fourth proportional to 703.53, 1,055.28 and 374.58 is: 561.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    703.53 : 1,055.28 = 374.58 : x
  2. Step 2: Convert to fraction form
    703.53/1,055.28 = 374.58/x
  3. Step 3: Cross multiply
    703.53x = 1,055.28 × 374.58
  4. Step 4: Simplify right side
    703.53x = 395,286.78
  5. Step 5: Solve for x
    x = 395,286.78/703.53
  6. Step 6: Final answer
    x = 561.86

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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.