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Finding the Fourth Proportional to 611.10, 910.88 and 606.31

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Solution

The fourth proportional to 611.10, 910.88 and 606.31 is: 903.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    611.10 : 910.88 = 606.31 : x
  2. Step 2: Convert to fraction form
    611.10/910.88 = 606.31/x
  3. Step 3: Cross multiply
    611.10x = 910.88 × 606.31
  4. Step 4: Simplify right side
    611.10x = 552,275.65
  5. Step 5: Solve for x
    x = 552,275.65/611.10
  6. Step 6: Final answer
    x = 903.74

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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.