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Finding the Fourth Proportional to 610.06, 841.20 and 499.18

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Solution

The fourth proportional to 610.06, 841.20 and 499.18 is: 688.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.06 : 841.20 = 499.18 : x
  2. Step 2: Convert to fraction form
    610.06/841.20 = 499.18/x
  3. Step 3: Cross multiply
    610.06x = 841.20 × 499.18
  4. Step 4: Simplify right side
    610.06x = 419,910.22
  5. Step 5: Solve for x
    x = 419,910.22/610.06
  6. Step 6: Final answer
    x = 688.31

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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.