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Finding the Fourth Proportional to 603.84, 911.12 and 581.36

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Solution

The fourth proportional to 603.84, 911.12 and 581.36 is: 877.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    603.84 : 911.12 = 581.36 : x
  2. Step 2: Convert to fraction form
    603.84/911.12 = 581.36/x
  3. Step 3: Cross multiply
    603.84x = 911.12 × 581.36
  4. Step 4: Simplify right side
    603.84x = 529,688.72
  5. Step 5: Solve for x
    x = 529,688.72/603.84
  6. Step 6: Final answer
    x = 877.20

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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.