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Finding the Fourth Proportional to 418.16, 625.73 and 373.21

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Solution

The fourth proportional to 418.16, 625.73 and 373.21 is: 558.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    418.16 : 625.73 = 373.21 : x
  2. Step 2: Convert to fraction form
    418.16/625.73 = 373.21/x
  3. Step 3: Cross multiply
    418.16x = 625.73 × 373.21
  4. Step 4: Simplify right side
    418.16x = 233,525.26
  5. Step 5: Solve for x
    x = 233,525.26/418.16
  6. Step 6: Final answer
    x = 558.46

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