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Finding the Fourth Proportional to 610.32, 911.07 and 555.65

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Solution

The fourth proportional to 610.32, 911.07 and 555.65 is: 829.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    610.32 : 911.07 = 555.65 : x
  2. Step 2: Convert to fraction form
    610.32/911.07 = 555.65/x
  3. Step 3: Cross multiply
    610.32x = 911.07 × 555.65
  4. Step 4: Simplify right side
    610.32x = 506,236.05
  5. Step 5: Solve for x
    x = 506,236.05/610.32
  6. Step 6: Final answer
    x = 829.46

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.