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Finding the Fourth Proportional to 537.75, 741.36 and 520.74

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Solution

The fourth proportional to 537.75, 741.36 and 520.74 is: 717.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.75 : 741.36 = 520.74 : x
  2. Step 2: Convert to fraction form
    537.75/741.36 = 520.74/x
  3. Step 3: Cross multiply
    537.75x = 741.36 × 520.74
  4. Step 4: Simplify right side
    537.75x = 386,055.81
  5. Step 5: Solve for x
    x = 386,055.81/537.75
  6. Step 6: Final answer
    x = 717.91

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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.