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Finding the Fourth Proportional to 795.23, 1,192.30 and 521.45

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Solution

The fourth proportional to 795.23, 1,192.30 and 521.45 is: 781.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    795.23 : 1,192.30 = 521.45 : x
  2. Step 2: Convert to fraction form
    795.23/1,192.30 = 521.45/x
  3. Step 3: Cross multiply
    795.23x = 1,192.30 × 521.45
  4. Step 4: Simplify right side
    795.23x = 621,724.84
  5. Step 5: Solve for x
    x = 621,724.84/795.23
  6. Step 6: Final answer
    x = 781.82

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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.