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Finding the Fourth Proportional to 1,298.16, 1,792.08 and 832.32

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Solution

The fourth proportional to 1,298.16, 1,792.08 and 832.32 is: 1,149.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298.16 : 1,792.08 = 832.32 : x
  2. Step 2: Convert to fraction form
    1,298.16/1,792.08 = 832.32/x
  3. Step 3: Cross multiply
    1,298.16x = 1,792.08 × 832.32
  4. Step 4: Simplify right side
    1,298.16x = 1,491,584.03
  5. Step 5: Solve for x
    x = 1,491,584.03/1,298.16
  6. Step 6: Final answer
    x = 1,149.00

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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.