Home / 1,545.21-2,317.51-620.29

Finding the Fourth Proportional to 1,545.21, 2,317.51 and 620.29

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Solution

The fourth proportional to 1,545.21, 2,317.51 and 620.29 is: 930.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.21 : 2,317.51 = 620.29 : x
  2. Step 2: Convert to fraction form
    1,545.21/2,317.51 = 620.29/x
  3. Step 3: Cross multiply
    1,545.21x = 2,317.51 × 620.29
  4. Step 4: Simplify right side
    1,545.21x = 1,437,531.95
  5. Step 5: Solve for x
    x = 1,437,531.95/1,545.21
  6. Step 6: Final answer
    x = 930.31

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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.