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Finding the Fourth Proportional to 531.40, 792.93 and 528.36

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Solution

The fourth proportional to 531.40, 792.93 and 528.36 is: 788.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.40 : 792.93 = 528.36 : x
  2. Step 2: Convert to fraction form
    531.40/792.93 = 528.36/x
  3. Step 3: Cross multiply
    531.40x = 792.93 × 528.36
  4. Step 4: Simplify right side
    531.40x = 418,952.49
  5. Step 5: Solve for x
    x = 418,952.49/531.40
  6. Step 6: Final answer
    x = 788.39

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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.