Home / 1,319.26-1,979.35-497.77

Finding the Fourth Proportional to 1,319.26, 1,979.35 and 497.77

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Solution

The fourth proportional to 1,319.26, 1,979.35 and 497.77 is: 746.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,319.26 : 1,979.35 = 497.77 : x
  2. Step 2: Convert to fraction form
    1,319.26/1,979.35 = 497.77/x
  3. Step 3: Cross multiply
    1,319.26x = 1,979.35 × 497.77
  4. Step 4: Simplify right side
    1,319.26x = 985,253.61
  5. Step 5: Solve for x
    x = 985,253.61/1,319.26
  6. Step 6: Final answer
    x = 746.82

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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.