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Finding the Fourth Proportional to 431.76, 595.60 and 265.84

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Solution

The fourth proportional to 431.76, 595.60 and 265.84 is: 366.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    431.76 : 595.60 = 265.84 : x
  2. Step 2: Convert to fraction form
    431.76/595.60 = 265.84/x
  3. Step 3: Cross multiply
    431.76x = 595.60 × 265.84
  4. Step 4: Simplify right side
    431.76x = 158,334.30
  5. Step 5: Solve for x
    x = 158,334.30/431.76
  6. Step 6: Final answer
    x = 366.72

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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.