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Finding the Fourth Proportional to 757.36, 1,130.18 and 675.55

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Solution

The fourth proportional to 757.36, 1,130.18 and 675.55 is: 1,008.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    757.36 : 1,130.18 = 675.55 : x
  2. Step 2: Convert to fraction form
    757.36/1,130.18 = 675.55/x
  3. Step 3: Cross multiply
    757.36x = 1,130.18 × 675.55
  4. Step 4: Simplify right side
    757.36x = 763,493.10
  5. Step 5: Solve for x
    x = 763,493.10/757.36
  6. Step 6: Final answer
    x = 1,008.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.