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Finding the Fourth Proportional to 662.16, 915.41 and 655.93

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Solution

The fourth proportional to 662.16, 915.41 and 655.93 is: 906.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.16 : 915.41 = 655.93 : x
  2. Step 2: Convert to fraction form
    662.16/915.41 = 655.93/x
  3. Step 3: Cross multiply
    662.16x = 915.41 × 655.93
  4. Step 4: Simplify right side
    662.16x = 600,441.60
  5. Step 5: Solve for x
    x = 600,441.60/662.16
  6. Step 6: Final answer
    x = 906.79

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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.