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Finding the Fourth Proportional to 662.16, 913.44 and 615.26

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Solution

The fourth proportional to 662.16, 913.44 and 615.26 is: 848.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.16 : 913.44 = 615.26 : x
  2. Step 2: Convert to fraction form
    662.16/913.44 = 615.26/x
  3. Step 3: Cross multiply
    662.16x = 913.44 × 615.26
  4. Step 4: Simplify right side
    662.16x = 561,998.53
  5. Step 5: Solve for x
    x = 561,998.53/662.16
  6. Step 6: Final answer
    x = 848.74

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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.