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Finding the Fourth Proportional to 856.59, 1,181.81 and 483.53

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Solution

The fourth proportional to 856.59, 1,181.81 and 483.53 is: 667.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    856.59 : 1,181.81 = 483.53 : x
  2. Step 2: Convert to fraction form
    856.59/1,181.81 = 483.53/x
  3. Step 3: Cross multiply
    856.59x = 1,181.81 × 483.53
  4. Step 4: Simplify right side
    856.59x = 571,432.26
  5. Step 5: Solve for x
    x = 571,432.26/856.59
  6. Step 6: Final answer
    x = 667.10

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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.