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Finding the Fourth Proportional to 630.24, 943.20 and 556.80

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Solution

The fourth proportional to 630.24, 943.20 and 556.80 is: 833.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    630.24 : 943.20 = 556.80 : x
  2. Step 2: Convert to fraction form
    630.24/943.20 = 556.80/x
  3. Step 3: Cross multiply
    630.24x = 943.20 × 556.80
  4. Step 4: Simplify right side
    630.24x = 525,173.76
  5. Step 5: Solve for x
    x = 525,173.76/630.24
  6. Step 6: Final answer
    x = 833.29

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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.