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Finding the Fourth Proportional to 757.59, 1,130.59 and 675.57

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Solution

The fourth proportional to 757.59, 1,130.59 and 675.57 is: 1,008.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    757.59 : 1,130.59 = 675.57 : x
  2. Step 2: Convert to fraction form
    757.59/1,130.59 = 675.57/x
  3. Step 3: Cross multiply
    757.59x = 1,130.59 × 675.57
  4. Step 4: Simplify right side
    757.59x = 763,797.77
  5. Step 5: Solve for x
    x = 763,797.77/757.59
  6. Step 6: Final answer
    x = 1,008.20

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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.