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Finding the Fourth Proportional to 504.90, 757.20 and 180.18

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Solution

The fourth proportional to 504.90, 757.20 and 180.18 is: 270.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.90 : 757.20 = 180.18 : x
  2. Step 2: Convert to fraction form
    504.90/757.20 = 180.18/x
  3. Step 3: Cross multiply
    504.90x = 757.20 × 180.18
  4. Step 4: Simplify right side
    504.90x = 136,432.30
  5. Step 5: Solve for x
    x = 136,432.30/504.90
  6. Step 6: Final answer
    x = 270.22

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1.5x scale

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.