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Finding the Fourth Proportional to 520.39, 779.72 and 501.25

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Solution

The fourth proportional to 520.39, 779.72 and 501.25 is: 751.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    520.39 : 779.72 = 501.25 : x
  2. Step 2: Convert to fraction form
    520.39/779.72 = 501.25/x
  3. Step 3: Cross multiply
    520.39x = 779.72 × 501.25
  4. Step 4: Simplify right side
    520.39x = 390,832.14
  5. Step 5: Solve for x
    x = 390,832.14/520.39
  6. Step 6: Final answer
    x = 751.04

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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.