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Finding the Fourth Proportional to 557, 768.84 and 360.51

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Solution

The fourth proportional to 557, 768.84 and 360.51 is: 497.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    557 : 768.84 = 360.51 : x
  2. Step 2: Convert to fraction form
    557/768.84 = 360.51/x
  3. Step 3: Cross multiply
    557x = 768.84 × 360.51
  4. Step 4: Simplify right side
    557x = 277,174.51
  5. Step 5: Solve for x
    x = 277,174.51/557
  6. Step 6: Final answer
    x = 497.62

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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.