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Finding the Fourth Proportional to 603.60, 847.20 and 603.60

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Solution

The fourth proportional to 603.60, 847.20 and 603.60 is: 847.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.60 : 847.20 = 603.60 : x
  2. Step 2: Convert to fraction form
    603.60/847.20 = 603.60/x
  3. Step 3: Cross multiply
    603.60x = 847.20 × 603.60
  4. Step 4: Simplify right side
    603.60x = 511,369.92
  5. Step 5: Solve for x
    x = 511,369.92/603.60
  6. Step 6: Final answer
    x = 847.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.