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Finding the Fourth Proportional to 610.66, 842.70 and 348.64

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Solution

The fourth proportional to 610.66, 842.70 and 348.64 is: 481.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.66 : 842.70 = 348.64 : x
  2. Step 2: Convert to fraction form
    610.66/842.70 = 348.64/x
  3. Step 3: Cross multiply
    610.66x = 842.70 × 348.64
  4. Step 4: Simplify right side
    610.66x = 293,798.93
  5. Step 5: Solve for x
    x = 293,798.93/610.66
  6. Step 6: Final answer
    x = 481.12

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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.