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Finding the Fourth Proportional to 953.92, 1,317 and 605.20

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Solution

The fourth proportional to 953.92, 1,317 and 605.20 is: 835.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    953.92 : 1,317 = 605.20 : x
  2. Step 2: Convert to fraction form
    953.92/1,317 = 605.20/x
  3. Step 3: Cross multiply
    953.92x = 1,317 × 605.20
  4. Step 4: Simplify right side
    953.92x = 797,048.40
  5. Step 5: Solve for x
    x = 797,048.40/953.92
  6. Step 6: Final answer
    x = 835.55

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1.5x scale

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.