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Finding the Fourth Proportional to 529.06, 727.89 and 482.42

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Solution

The fourth proportional to 529.06, 727.89 and 482.42 is: 663.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    529.06 : 727.89 = 482.42 : x
  2. Step 2: Convert to fraction form
    529.06/727.89 = 482.42/x
  3. Step 3: Cross multiply
    529.06x = 727.89 × 482.42
  4. Step 4: Simplify right side
    529.06x = 351,148.69
  5. Step 5: Solve for x
    x = 351,148.69/529.06
  6. Step 6: Final answer
    x = 663.72

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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.