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Finding the Fourth Proportional to 403.48, 555.90 and 265.24

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Solution

The fourth proportional to 403.48, 555.90 and 265.24 is: 365.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    403.48 : 555.90 = 265.24 : x
  2. Step 2: Convert to fraction form
    403.48/555.90 = 265.24/x
  3. Step 3: Cross multiply
    403.48x = 555.90 × 265.24
  4. Step 4: Simplify right side
    403.48x = 147,446.92
  5. Step 5: Solve for x
    x = 147,446.92/403.48
  6. Step 6: Final answer
    x = 365.44

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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.