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Finding the Fourth Proportional to 520.94, 780.60 and 304.27

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Solution

The fourth proportional to 520.94, 780.60 and 304.27 is: 455.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.94 : 780.60 = 304.27 : x
  2. Step 2: Convert to fraction form
    520.94/780.60 = 304.27/x
  3. Step 3: Cross multiply
    520.94x = 780.60 × 304.27
  4. Step 4: Simplify right side
    520.94x = 237,513.16
  5. Step 5: Solve for x
    x = 237,513.16/520.94
  6. Step 6: Final answer
    x = 455.93

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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.