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Finding the Fourth Proportional to 902.17, 1,244.69 and 607.60

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Solution

The fourth proportional to 902.17, 1,244.69 and 607.60 is: 838.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.17 : 1,244.69 = 607.60 : x
  2. Step 2: Convert to fraction form
    902.17/1,244.69 = 607.60/x
  3. Step 3: Cross multiply
    902.17x = 1,244.69 × 607.60
  4. Step 4: Simplify right side
    902.17x = 756,267.42
  5. Step 5: Solve for x
    x = 756,267.42/902.17
  6. Step 6: Final answer
    x = 838.28

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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.