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Finding the Fourth Proportional to 610.64, 842.28 and 377.36

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Solution

The fourth proportional to 610.64, 842.28 and 377.36 is: 520.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.64 : 842.28 = 377.36 : x
  2. Step 2: Convert to fraction form
    610.64/842.28 = 377.36/x
  3. Step 3: Cross multiply
    610.64x = 842.28 × 377.36
  4. Step 4: Simplify right side
    610.64x = 317,842.78
  5. Step 5: Solve for x
    x = 317,842.78/610.64
  6. Step 6: Final answer
    x = 520.51

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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.