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Finding the Fourth Proportional to 852.38, 1,176.24 and 479.34

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Solution

The fourth proportional to 852.38, 1,176.24 and 479.34 is: 661.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    852.38 : 1,176.24 = 479.34 : x
  2. Step 2: Convert to fraction form
    852.38/1,176.24 = 479.34/x
  3. Step 3: Cross multiply
    852.38x = 1,176.24 × 479.34
  4. Step 4: Simplify right side
    852.38x = 563,818.88
  5. Step 5: Solve for x
    x = 563,818.88/852.38
  6. Step 6: Final answer
    x = 661.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.