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Finding the Fourth Proportional to 896.85, 1,237.65 and 503.86

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Solution

The fourth proportional to 896.85, 1,237.65 and 503.86 is: 695.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    896.85 : 1,237.65 = 503.86 : x
  2. Step 2: Convert to fraction form
    896.85/1,237.65 = 503.86/x
  3. Step 3: Cross multiply
    896.85x = 1,237.65 × 503.86
  4. Step 4: Simplify right side
    896.85x = 623,602.33
  5. Step 5: Solve for x
    x = 623,602.33/896.85
  6. Step 6: Final answer
    x = 695.33

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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.