Home / 850.23-1,275.30-302.40

Finding the Fourth Proportional to 850.23, 1,275.30 and 302.40

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Solution

The fourth proportional to 850.23, 1,275.30 and 302.40 is: 453.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    850.23 : 1,275.30 = 302.40 : x
  2. Step 2: Convert to fraction form
    850.23/1,275.30 = 302.40/x
  3. Step 3: Cross multiply
    850.23x = 1,275.30 × 302.40
  4. Step 4: Simplify right side
    850.23x = 385,650.72
  5. Step 5: Solve for x
    x = 385,650.72/850.23
  6. Step 6: Final answer
    x = 453.58

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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.