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Finding the Fourth Proportional to 856.75, 1,182.90 and 562.52

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Solution

The fourth proportional to 856.75, 1,182.90 and 562.52 is: 776.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    856.75 : 1,182.90 = 562.52 : x
  2. Step 2: Convert to fraction form
    856.75/1,182.90 = 562.52/x
  3. Step 3: Cross multiply
    856.75x = 1,182.90 × 562.52
  4. Step 4: Simplify right side
    856.75x = 665,404.91
  5. Step 5: Solve for x
    x = 665,404.91/856.75
  6. Step 6: Final answer
    x = 776.66

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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.