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Finding the Fourth Proportional to 530.50, 791.23 and 521.27

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Solution

The fourth proportional to 530.50, 791.23 and 521.27 is: 777.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    530.50 : 791.23 = 521.27 : x
  2. Step 2: Convert to fraction form
    530.50/791.23 = 521.27/x
  3. Step 3: Cross multiply
    530.50x = 791.23 × 521.27
  4. Step 4: Simplify right side
    530.50x = 412,444.46
  5. Step 5: Solve for x
    x = 412,444.46/530.50
  6. Step 6: Final answer
    x = 777.47

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.