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Finding the Fourth Proportional to 437.01, 654.14 and 390.63

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Solution

The fourth proportional to 437.01, 654.14 and 390.63 is: 584.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    437.01 : 654.14 = 390.63 : x
  2. Step 2: Convert to fraction form
    437.01/654.14 = 390.63/x
  3. Step 3: Cross multiply
    437.01x = 654.14 × 390.63
  4. Step 4: Simplify right side
    437.01x = 255,530.14
  5. Step 5: Solve for x
    x = 255,530.14/437.01
  6. Step 6: Final answer
    x = 584.73

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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.