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Finding the Fourth Proportional to 852.51, 1,278.71 and 236.20

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Solution

The fourth proportional to 852.51, 1,278.71 and 236.20 is: 354.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.51 : 1,278.71 = 236.20 : x
  2. Step 2: Convert to fraction form
    852.51/1,278.71 = 236.20/x
  3. Step 3: Cross multiply
    852.51x = 1,278.71 × 236.20
  4. Step 4: Simplify right side
    852.51x = 302,031.30
  5. Step 5: Solve for x
    x = 302,031.30/852.51
  6. Step 6: Final answer
    x = 354.28

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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.