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Finding the Fourth Proportional to 834.45, 1,151.59 and 480.49

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Solution

The fourth proportional to 834.45, 1,151.59 and 480.49 is: 663.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.45 : 1,151.59 = 480.49 : x
  2. Step 2: Convert to fraction form
    834.45/1,151.59 = 480.49/x
  3. Step 3: Cross multiply
    834.45x = 1,151.59 × 480.49
  4. Step 4: Simplify right side
    834.45x = 553,327.48
  5. Step 5: Solve for x
    x = 553,327.48/834.45
  6. Step 6: Final answer
    x = 663.10

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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.