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Finding the Fourth Proportional to 856.89, 1,182.53 and 502.79

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Solution

The fourth proportional to 856.89, 1,182.53 and 502.79 is: 693.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    856.89 : 1,182.53 = 502.79 : x
  2. Step 2: Convert to fraction form
    856.89/1,182.53 = 502.79/x
  3. Step 3: Cross multiply
    856.89x = 1,182.53 × 502.79
  4. Step 4: Simplify right side
    856.89x = 594,559.60
  5. Step 5: Solve for x
    x = 594,559.60/856.89
  6. Step 6: Final answer
    x = 693.86

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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.