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Finding the Fourth Proportional to 451.76, 623.50 and 265.31

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Solution

The fourth proportional to 451.76, 623.50 and 265.31 is: 366.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.76 : 623.50 = 265.31 : x
  2. Step 2: Convert to fraction form
    451.76/623.50 = 265.31/x
  3. Step 3: Cross multiply
    451.76x = 623.50 × 265.31
  4. Step 4: Simplify right side
    451.76x = 165,420.79
  5. Step 5: Solve for x
    x = 165,420.79/451.76
  6. Step 6: Final answer
    x = 366.17

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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.