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Finding the Fourth Proportional to 604.40, 833.60 and 520.51

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Solution

The fourth proportional to 604.40, 833.60 and 520.51 is: 717.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    604.40 : 833.60 = 520.51 : x
  2. Step 2: Convert to fraction form
    604.40/833.60 = 520.51/x
  3. Step 3: Cross multiply
    604.40x = 833.60 × 520.51
  4. Step 4: Simplify right side
    604.40x = 433,897.14
  5. Step 5: Solve for x
    x = 433,897.14/604.40
  6. Step 6: Final answer
    x = 717.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.