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Finding the Fourth Proportional to 529.75, 731.07 and 352.39

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Solution

The fourth proportional to 529.75, 731.07 and 352.39 is: 486.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.75 : 731.07 = 352.39 : x
  2. Step 2: Convert to fraction form
    529.75/731.07 = 352.39/x
  3. Step 3: Cross multiply
    529.75x = 731.07 × 352.39
  4. Step 4: Simplify right side
    529.75x = 257,621.76
  5. Step 5: Solve for x
    x = 257,621.76/529.75
  6. Step 6: Final answer
    x = 486.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.