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Finding the Fourth Proportional to 1,178.83, 1,767.57 and 356.86

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Solution

The fourth proportional to 1,178.83, 1,767.57 and 356.86 is: 535.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,178.83 : 1,767.57 = 356.86 : x
  2. Step 2: Convert to fraction form
    1,178.83/1,767.57 = 356.86/x
  3. Step 3: Cross multiply
    1,178.83x = 1,767.57 × 356.86
  4. Step 4: Simplify right side
    1,178.83x = 630,775.03
  5. Step 5: Solve for x
    x = 630,775.03/1,178.83
  6. Step 6: Final answer
    x = 535.09

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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.