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Finding the Fourth Proportional to 908.90, 1,253.56 and 610.04

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Solution

The fourth proportional to 908.90, 1,253.56 and 610.04 is: 841.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    908.90 : 1,253.56 = 610.04 : x
  2. Step 2: Convert to fraction form
    908.90/1,253.56 = 610.04/x
  3. Step 3: Cross multiply
    908.90x = 1,253.56 × 610.04
  4. Step 4: Simplify right side
    908.90x = 764,728.83
  5. Step 5: Solve for x
    x = 764,728.83/908.90
  6. Step 6: Final answer
    x = 841.38

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Double scale
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1.5x scale

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.