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Finding the Fourth Proportional to 520.16, 716.84 and 372.54

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Solution

The fourth proportional to 520.16, 716.84 and 372.54 is: 513.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.16 : 716.84 = 372.54 : x
  2. Step 2: Convert to fraction form
    520.16/716.84 = 372.54/x
  3. Step 3: Cross multiply
    520.16x = 716.84 × 372.54
  4. Step 4: Simplify right side
    520.16x = 267,050.18
  5. Step 5: Solve for x
    x = 267,050.18/520.16
  6. Step 6: Final answer
    x = 513.40

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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.