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Finding the Fourth Proportional to 953.46, 1,429.92 and 491.09

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Solution

The fourth proportional to 953.46, 1,429.92 and 491.09 is: 736.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.46 : 1,429.92 = 491.09 : x
  2. Step 2: Convert to fraction form
    953.46/1,429.92 = 491.09/x
  3. Step 3: Cross multiply
    953.46x = 1,429.92 × 491.09
  4. Step 4: Simplify right side
    953.46x = 702,219.41
  5. Step 5: Solve for x
    x = 702,219.41/953.46
  6. Step 6: Final answer
    x = 736.50

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1.5x scale

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.