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Finding the Fourth Proportional to 531.19, 795.93 and 511.21

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Solution

The fourth proportional to 531.19, 795.93 and 511.21 is: 765.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.19 : 795.93 = 511.21 : x
  2. Step 2: Convert to fraction form
    531.19/795.93 = 511.21/x
  3. Step 3: Cross multiply
    531.19x = 795.93 × 511.21
  4. Step 4: Simplify right side
    531.19x = 406,887.38
  5. Step 5: Solve for x
    x = 406,887.38/531.19
  6. Step 6: Final answer
    x = 765.99

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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.