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Finding the Fourth Proportional to 530.62, 795.93 and 518.47

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Solution

The fourth proportional to 530.62, 795.93 and 518.47 is: 777.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.62 : 795.93 = 518.47 : x
  2. Step 2: Convert to fraction form
    530.62/795.93 = 518.47/x
  3. Step 3: Cross multiply
    530.62x = 795.93 × 518.47
  4. Step 4: Simplify right side
    530.62x = 412,665.83
  5. Step 5: Solve for x
    x = 412,665.83/530.62
  6. Step 6: Final answer
    x = 777.71

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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.