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Finding the Fourth Proportional to 523.25, 785.06 and 215.02

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Solution

The fourth proportional to 523.25, 785.06 and 215.02 is: 322.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    523.25 : 785.06 = 215.02 : x
  2. Step 2: Convert to fraction form
    523.25/785.06 = 215.02/x
  3. Step 3: Cross multiply
    523.25x = 785.06 × 215.02
  4. Step 4: Simplify right side
    523.25x = 168,799.68
  5. Step 5: Solve for x
    x = 168,799.68/523.25
  6. Step 6: Final answer
    x = 322.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.