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Finding the Fourth Proportional to 902.67, 1,246.58 and 623.63

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Solution

The fourth proportional to 902.67, 1,246.58 and 623.63 is: 861.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    902.67 : 1,246.58 = 623.63 : x
  2. Step 2: Convert to fraction form
    902.67/1,246.58 = 623.63/x
  3. Step 3: Cross multiply
    902.67x = 1,246.58 × 623.63
  4. Step 4: Simplify right side
    902.67x = 777,395.33
  5. Step 5: Solve for x
    x = 777,395.33/902.67
  6. Step 6: Final answer
    x = 861.22

Related Problems

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Half scale
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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.