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Finding the Fourth Proportional to 402.66, 555.53 and 269.93

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Solution

The fourth proportional to 402.66, 555.53 and 269.93 is: 372.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    402.66 : 555.53 = 269.93 : x
  2. Step 2: Convert to fraction form
    402.66/555.53 = 269.93/x
  3. Step 3: Cross multiply
    402.66x = 555.53 × 269.93
  4. Step 4: Simplify right side
    402.66x = 149,954.21
  5. Step 5: Solve for x
    x = 149,954.21/402.66
  6. Step 6: Final answer
    x = 372.41

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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.