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Finding the Fourth Proportional to 1,134.32, 1,701.07 and 1,108.40

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Solution

The fourth proportional to 1,134.32, 1,701.07 and 1,108.40 is: 1,662.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,134.32 : 1,701.07 = 1,108.40 : x
  2. Step 2: Convert to fraction form
    1,134.32/1,701.07 = 1,108.40/x
  3. Step 3: Cross multiply
    1,134.32x = 1,701.07 × 1,108.40
  4. Step 4: Simplify right side
    1,134.32x = 1,885,454.71
  5. Step 5: Solve for x
    x = 1,885,454.71/1,134.32
  6. Step 6: Final answer
    x = 1,662.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.