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Finding the Fourth Proportional to 1,545.67, 2,317.11 and 571.09

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Solution

The fourth proportional to 1,545.67, 2,317.11 and 571.09 is: 856.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.67 : 2,317.11 = 571.09 : x
  2. Step 2: Convert to fraction form
    1,545.67/2,317.11 = 571.09/x
  3. Step 3: Cross multiply
    1,545.67x = 2,317.11 × 571.09
  4. Step 4: Simplify right side
    1,545.67x = 1,323,278.35
  5. Step 5: Solve for x
    x = 1,323,278.35/1,545.67
  6. Step 6: Final answer
    x = 856.12

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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.