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Finding the Fourth Proportional to 617.03, 921.07 and 571.30

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Solution

The fourth proportional to 617.03, 921.07 and 571.30 is: 852.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.03 : 921.07 = 571.30 : x
  2. Step 2: Convert to fraction form
    617.03/921.07 = 571.30/x
  3. Step 3: Cross multiply
    617.03x = 921.07 × 571.30
  4. Step 4: Simplify right side
    617.03x = 526,213.42
  5. Step 5: Solve for x
    x = 526,213.42/617.03
  6. Step 6: Final answer
    x = 852.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.