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Finding the Fourth Proportional to 718.52, 1,078.18 and 333.77

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Solution

The fourth proportional to 718.52, 1,078.18 and 333.77 is: 500.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    718.52 : 1,078.18 = 333.77 : x
  2. Step 2: Convert to fraction form
    718.52/1,078.18 = 333.77/x
  3. Step 3: Cross multiply
    718.52x = 1,078.18 × 333.77
  4. Step 4: Simplify right side
    718.52x = 359,857.91
  5. Step 5: Solve for x
    x = 359,857.91/718.52
  6. Step 6: Final answer
    x = 500.84

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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.