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Finding the Fourth Proportional to 610.27, 841.79 and 400.45

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Solution

The fourth proportional to 610.27, 841.79 and 400.45 is: 552.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.27 : 841.79 = 400.45 : x
  2. Step 2: Convert to fraction form
    610.27/841.79 = 400.45/x
  3. Step 3: Cross multiply
    610.27x = 841.79 × 400.45
  4. Step 4: Simplify right side
    610.27x = 337,094.91
  5. Step 5: Solve for x
    x = 337,094.91/610.27
  6. Step 6: Final answer
    x = 552.37

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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.