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Finding the Fourth Proportional to 545.12, 813.68 and 481.04

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Solution

The fourth proportional to 545.12, 813.68 and 481.04 is: 718.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    545.12 : 813.68 = 481.04 : x
  2. Step 2: Convert to fraction form
    545.12/813.68 = 481.04/x
  3. Step 3: Cross multiply
    545.12x = 813.68 × 481.04
  4. Step 4: Simplify right side
    545.12x = 391,412.63
  5. Step 5: Solve for x
    x = 391,412.63/545.12
  6. Step 6: Final answer
    x = 718.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.