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Finding the Fourth Proportional to 296.64, 445.59 and 253.35

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Solution

The fourth proportional to 296.64, 445.59 and 253.35 is: 380.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.64 : 445.59 = 253.35 : x
  2. Step 2: Convert to fraction form
    296.64/445.59 = 253.35/x
  3. Step 3: Cross multiply
    296.64x = 445.59 × 253.35
  4. Step 4: Simplify right side
    296.64x = 112,890.23
  5. Step 5: Solve for x
    x = 112,890.23/296.64
  6. Step 6: Final answer
    x = 380.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.