Home / 1,053.29-1,579.95-620.75

Finding the Fourth Proportional to 1,053.29, 1,579.95 and 620.75

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Solution

The fourth proportional to 1,053.29, 1,579.95 and 620.75 is: 931.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053.29 : 1,579.95 = 620.75 : x
  2. Step 2: Convert to fraction form
    1,053.29/1,579.95 = 620.75/x
  3. Step 3: Cross multiply
    1,053.29x = 1,579.95 × 620.75
  4. Step 4: Simplify right side
    1,053.29x = 980,753.96
  5. Step 5: Solve for x
    x = 980,753.96/1,053.29
  6. Step 6: Final answer
    x = 931.13

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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.