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Finding the Fourth Proportional to 362.55, 500.47 and 215.20

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Solution

The fourth proportional to 362.55, 500.47 and 215.20 is: 297.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    362.55 : 500.47 = 215.20 : x
  2. Step 2: Convert to fraction form
    362.55/500.47 = 215.20/x
  3. Step 3: Cross multiply
    362.55x = 500.47 × 215.20
  4. Step 4: Simplify right side
    362.55x = 107,701.14
  5. Step 5: Solve for x
    x = 107,701.14/362.55
  6. Step 6: Final answer
    x = 297.07

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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.