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Finding the Fourth Proportional to 603.86, 904.32 and 545.43

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Solution

The fourth proportional to 603.86, 904.32 and 545.43 is: 816.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.86 : 904.32 = 545.43 : x
  2. Step 2: Convert to fraction form
    603.86/904.32 = 545.43/x
  3. Step 3: Cross multiply
    603.86x = 904.32 × 545.43
  4. Step 4: Simplify right side
    603.86x = 493,243.26
  5. Step 5: Solve for x
    x = 493,243.26/603.86
  6. Step 6: Final answer
    x = 816.81

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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.