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Finding the Fourth Proportional to 662.01, 912.63 and 521.52

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Solution

The fourth proportional to 662.01, 912.63 and 521.52 is: 718.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.01 : 912.63 = 521.52 : x
  2. Step 2: Convert to fraction form
    662.01/912.63 = 521.52/x
  3. Step 3: Cross multiply
    662.01x = 912.63 × 521.52
  4. Step 4: Simplify right side
    662.01x = 475,954.80
  5. Step 5: Solve for x
    x = 475,954.80/662.01
  6. Step 6: Final answer
    x = 718.95

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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.