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Finding the Fourth Proportional to 856.89, 1,182.52 and 483.88

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Solution

The fourth proportional to 856.89, 1,182.52 and 483.88 is: 667.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    856.89 : 1,182.52 = 483.88 : x
  2. Step 2: Convert to fraction form
    856.89/1,182.52 = 483.88/x
  3. Step 3: Cross multiply
    856.89x = 1,182.52 × 483.88
  4. Step 4: Simplify right side
    856.89x = 572,191.87
  5. Step 5: Solve for x
    x = 572,191.87/856.89
  6. Step 6: Final answer
    x = 667.75

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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.