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Finding the Fourth Proportional to 1,080.96, 1,492.23 and 707.96

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Solution

The fourth proportional to 1,080.96, 1,492.23 and 707.96 is: 977.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080.96 : 1,492.23 = 707.96 : x
  2. Step 2: Convert to fraction form
    1,080.96/1,492.23 = 707.96/x
  3. Step 3: Cross multiply
    1,080.96x = 1,492.23 × 707.96
  4. Step 4: Simplify right side
    1,080.96x = 1,056,439.15
  5. Step 5: Solve for x
    x = 1,056,439.15/1,080.96
  6. Step 6: Final answer
    x = 977.32

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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.