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Finding the Fourth Proportional to 1,080.17, 1,490.52 and 608.05

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Solution

The fourth proportional to 1,080.17, 1,490.52 and 608.05 is: 839.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.17 : 1,490.52 = 608.05 : x
  2. Step 2: Convert to fraction form
    1,080.17/1,490.52 = 608.05/x
  3. Step 3: Cross multiply
    1,080.17x = 1,490.52 × 608.05
  4. Step 4: Simplify right side
    1,080.17x = 906,306.96
  5. Step 5: Solve for x
    x = 906,306.96/1,080.17
  6. Step 6: Final answer
    x = 839.04

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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.