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Finding the Fourth Proportional to 401.23, 555.02 and 335.53

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Solution

The fourth proportional to 401.23, 555.02 and 335.53 is: 464.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    401.23 : 555.02 = 335.53 : x
  2. Step 2: Convert to fraction form
    401.23/555.02 = 335.53/x
  3. Step 3: Cross multiply
    401.23x = 555.02 × 335.53
  4. Step 4: Simplify right side
    401.23x = 186,224.18
  5. Step 5: Solve for x
    x = 186,224.18/401.23
  6. Step 6: Final answer
    x = 464.13

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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.