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Finding the Fourth Proportional to 556.71, 768 and 360.30

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Solution

The fourth proportional to 556.71, 768 and 360.30 is: 497.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    556.71 : 768 = 360.30 : x
  2. Step 2: Convert to fraction form
    556.71/768 = 360.30/x
  3. Step 3: Cross multiply
    556.71x = 768 × 360.30
  4. Step 4: Simplify right side
    556.71x = 276,710.40
  5. Step 5: Solve for x
    x = 276,710.40/556.71
  6. Step 6: Final answer
    x = 497.05

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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.