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Finding the Fourth Proportional to 403.99, 555.56 and 337.57

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Solution

The fourth proportional to 403.99, 555.56 and 337.57 is: 464.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.99 : 555.56 = 337.57 : x
  2. Step 2: Convert to fraction form
    403.99/555.56 = 337.57/x
  3. Step 3: Cross multiply
    403.99x = 555.56 × 337.57
  4. Step 4: Simplify right side
    403.99x = 187,538.58
  5. Step 5: Solve for x
    x = 187,538.58/403.99
  6. Step 6: Final answer
    x = 464.22

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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.