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Finding the Fourth Proportional to 548.65, 817.16 and 529.48

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Solution

The fourth proportional to 548.65, 817.16 and 529.48 is: 788.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    548.65 : 817.16 = 529.48 : x
  2. Step 2: Convert to fraction form
    548.65/817.16 = 529.48/x
  3. Step 3: Cross multiply
    548.65x = 817.16 × 529.48
  4. Step 4: Simplify right side
    548.65x = 432,669.88
  5. Step 5: Solve for x
    x = 432,669.88/548.65
  6. Step 6: Final answer
    x = 788.61

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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.