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Finding the Fourth Proportional to 834.24, 1,151.52 and 485.04

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Solution

The fourth proportional to 834.24, 1,151.52 and 485.04 is: 669.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    834.24 : 1,151.52 = 485.04 : x
  2. Step 2: Convert to fraction form
    834.24/1,151.52 = 485.04/x
  3. Step 3: Cross multiply
    834.24x = 1,151.52 × 485.04
  4. Step 4: Simplify right side
    834.24x = 558,533.26
  5. Step 5: Solve for x
    x = 558,533.26/834.24
  6. Step 6: Final answer
    x = 669.51

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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.