Home / 1,319.55-1,979.18-529.25

Finding the Fourth Proportional to 1,319.55, 1,979.18 and 529.25

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Solution

The fourth proportional to 1,319.55, 1,979.18 and 529.25 is: 793.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.55 : 1,979.18 = 529.25 : x
  2. Step 2: Convert to fraction form
    1,319.55/1,979.18 = 529.25/x
  3. Step 3: Cross multiply
    1,319.55x = 1,979.18 × 529.25
  4. Step 4: Simplify right side
    1,319.55x = 1,047,473.43
  5. Step 5: Solve for x
    x = 1,047,473.43/1,319.55
  6. Step 6: Final answer
    x = 793.81

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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.