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Finding the Fourth Proportional to 610.22, 840.38 and 555.54

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Solution

The fourth proportional to 610.22, 840.38 and 555.54 is: 765.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.22 : 840.38 = 555.54 : x
  2. Step 2: Convert to fraction form
    610.22/840.38 = 555.54/x
  3. Step 3: Cross multiply
    610.22x = 840.38 × 555.54
  4. Step 4: Simplify right side
    610.22x = 466,864.71
  5. Step 5: Solve for x
    x = 466,864.71/610.22
  6. Step 6: Final answer
    x = 765.08

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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.