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Finding the Fourth Proportional to 747.15, 1,119.22 and 357.53

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Solution

The fourth proportional to 747.15, 1,119.22 and 357.53 is: 535.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    747.15 : 1,119.22 = 357.53 : x
  2. Step 2: Convert to fraction form
    747.15/1,119.22 = 357.53/x
  3. Step 3: Cross multiply
    747.15x = 1,119.22 × 357.53
  4. Step 4: Simplify right side
    747.15x = 400,154.73
  5. Step 5: Solve for x
    x = 400,154.73/747.15
  6. Step 6: Final answer
    x = 535.57

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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.