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Finding the Fourth Proportional to 836.52, 1,154.58 and 487.23

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Solution

The fourth proportional to 836.52, 1,154.58 and 487.23 is: 672.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    836.52 : 1,154.58 = 487.23 : x
  2. Step 2: Convert to fraction form
    836.52/1,154.58 = 487.23/x
  3. Step 3: Cross multiply
    836.52x = 1,154.58 × 487.23
  4. Step 4: Simplify right side
    836.52x = 562,546.01
  5. Step 5: Solve for x
    x = 562,546.01/836.52
  6. Step 6: Final answer
    x = 672.48

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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.