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Finding the Fourth Proportional to 603.48, 909.28 and 545.77

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Solution

The fourth proportional to 603.48, 909.28 and 545.77 is: 822.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.48 : 909.28 = 545.77 : x
  2. Step 2: Convert to fraction form
    603.48/909.28 = 545.77/x
  3. Step 3: Cross multiply
    603.48x = 909.28 × 545.77
  4. Step 4: Simplify right side
    603.48x = 496,259.56
  5. Step 5: Solve for x
    x = 496,259.56/603.48
  6. Step 6: Final answer
    x = 822.32

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.