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Finding the Fourth Proportional to 478.15, 716.77 and 360.84

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Solution

The fourth proportional to 478.15, 716.77 and 360.84 is: 540.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    478.15 : 716.77 = 360.84 : x
  2. Step 2: Convert to fraction form
    478.15/716.77 = 360.84/x
  3. Step 3: Cross multiply
    478.15x = 716.77 × 360.84
  4. Step 4: Simplify right side
    478.15x = 258,638.39
  5. Step 5: Solve for x
    x = 258,638.39/478.15
  6. Step 6: Final answer
    x = 540.91

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.