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Finding the Fourth Proportional to 545.42, 817.29 and 369.08

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Solution

The fourth proportional to 545.42, 817.29 and 369.08 is: 553.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.42 : 817.29 = 369.08 : x
  2. Step 2: Convert to fraction form
    545.42/817.29 = 369.08/x
  3. Step 3: Cross multiply
    545.42x = 817.29 × 369.08
  4. Step 4: Simplify right side
    545.42x = 301,641.31
  5. Step 5: Solve for x
    x = 301,641.31/545.42
  6. Step 6: Final answer
    x = 553.05

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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.