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Finding the Fourth Proportional to 539.03, 743.57 and 315.01

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Solution

The fourth proportional to 539.03, 743.57 and 315.01 is: 434.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    539.03 : 743.57 = 315.01 : x
  2. Step 2: Convert to fraction form
    539.03/743.57 = 315.01/x
  3. Step 3: Cross multiply
    539.03x = 743.57 × 315.01
  4. Step 4: Simplify right side
    539.03x = 234,226.69
  5. Step 5: Solve for x
    x = 234,226.69/539.03
  6. Step 6: Final answer
    x = 434.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.