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Finding the Fourth Proportional to 504.19, 756.29 and 139.02

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Solution

The fourth proportional to 504.19, 756.29 and 139.02 is: 208.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    504.19 : 756.29 = 139.02 : x
  2. Step 2: Convert to fraction form
    504.19/756.29 = 139.02/x
  3. Step 3: Cross multiply
    504.19x = 756.29 × 139.02
  4. Step 4: Simplify right side
    504.19x = 105,139.44
  5. Step 5: Solve for x
    x = 105,139.44/504.19
  6. Step 6: Final answer
    x = 208.53

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Similar ratio
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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.