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Finding the Fourth Proportional to 617.93, 928.10 and 545.03

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Solution

The fourth proportional to 617.93, 928.10 and 545.03 is: 818.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.93 : 928.10 = 545.03 : x
  2. Step 2: Convert to fraction form
    617.93/928.10 = 545.03/x
  3. Step 3: Cross multiply
    617.93x = 928.10 × 545.03
  4. Step 4: Simplify right side
    617.93x = 505,839.62
  5. Step 5: Solve for x
    x = 505,839.62/617.93
  6. Step 6: Final answer
    x = 818.60

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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.