Home / 1,115.10-1,672.38-529.84

Finding the Fourth Proportional to 1,115.10, 1,672.38 and 529.84

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Solution

The fourth proportional to 1,115.10, 1,672.38 and 529.84 is: 794.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115.10 : 1,672.38 = 529.84 : x
  2. Step 2: Convert to fraction form
    1,115.10/1,672.38 = 529.84/x
  3. Step 3: Cross multiply
    1,115.10x = 1,672.38 × 529.84
  4. Step 4: Simplify right side
    1,115.10x = 886,095.91
  5. Step 5: Solve for x
    x = 886,095.91/1,115.10
  6. Step 6: Final answer
    x = 794.63

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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.