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Finding the Fourth Proportional to 746.91, 1,119.60 and 502.86

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Solution

The fourth proportional to 746.91, 1,119.60 and 502.86 is: 753.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    746.91 : 1,119.60 = 502.86 : x
  2. Step 2: Convert to fraction form
    746.91/1,119.60 = 502.86/x
  3. Step 3: Cross multiply
    746.91x = 1,119.60 × 502.86
  4. Step 4: Simplify right side
    746.91x = 563,002.06
  5. Step 5: Solve for x
    x = 563,002.06/746.91
  6. Step 6: Final answer
    x = 753.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.