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Finding the Fourth Proportional to 437.02, 603.40 and 306.20

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Solution

The fourth proportional to 437.02, 603.40 and 306.20 is: 422.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.02 : 603.40 = 306.20 : x
  2. Step 2: Convert to fraction form
    437.02/603.40 = 306.20/x
  3. Step 3: Cross multiply
    437.02x = 603.40 × 306.20
  4. Step 4: Simplify right side
    437.02x = 184,761.08
  5. Step 5: Solve for x
    x = 184,761.08/437.02
  6. Step 6: Final answer
    x = 422.77

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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.