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Finding the Fourth Proportional to 602.99, 905.18 and 360.03

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Solution

The fourth proportional to 602.99, 905.18 and 360.03 is: 540.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    602.99 : 905.18 = 360.03 : x
  2. Step 2: Convert to fraction form
    602.99/905.18 = 360.03/x
  3. Step 3: Cross multiply
    602.99x = 905.18 × 360.03
  4. Step 4: Simplify right side
    602.99x = 325,890.16
  5. Step 5: Solve for x
    x = 325,890.16/602.99
  6. Step 6: Final answer
    x = 540.45

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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.