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Finding the Fourth Proportional to 856.87, 1,182.63 and 502.77

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Solution

The fourth proportional to 856.87, 1,182.63 and 502.77 is: 693.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    856.87 : 1,182.63 = 502.77 : x
  2. Step 2: Convert to fraction form
    856.87/1,182.63 = 502.77/x
  3. Step 3: Cross multiply
    856.87x = 1,182.63 × 502.77
  4. Step 4: Simplify right side
    856.87x = 594,590.89
  5. Step 5: Solve for x
    x = 594,590.89/856.87
  6. Step 6: Final answer
    x = 693.91

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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.