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Finding the Fourth Proportional to 603.02, 908.58 and 545.30

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Solution

The fourth proportional to 603.02, 908.58 and 545.30 is: 821.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.02 : 908.58 = 545.30 : x
  2. Step 2: Convert to fraction form
    603.02/908.58 = 545.30/x
  3. Step 3: Cross multiply
    603.02x = 908.58 × 545.30
  4. Step 4: Simplify right side
    603.02x = 495,448.90
  5. Step 5: Solve for x
    x = 495,448.90/603.02
  6. Step 6: Final answer
    x = 821.62

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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.