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Finding the Fourth Proportional to 604.05, 904.86 and 553.29

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Solution

The fourth proportional to 604.05, 904.86 and 553.29 is: 828.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.05 : 904.86 = 553.29 : x
  2. Step 2: Convert to fraction form
    604.05/904.86 = 553.29/x
  3. Step 3: Cross multiply
    604.05x = 904.86 × 553.29
  4. Step 4: Simplify right side
    604.05x = 500,649.99
  5. Step 5: Solve for x
    x = 500,649.99/604.05
  6. Step 6: Final answer
    x = 828.82

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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.