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Finding the Fourth Proportional to 1,038.86, 1,433.50 and 882.12

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Solution

The fourth proportional to 1,038.86, 1,433.50 and 882.12 is: 1,217.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,038.86 : 1,433.50 = 882.12 : x
  2. Step 2: Convert to fraction form
    1,038.86/1,433.50 = 882.12/x
  3. Step 3: Cross multiply
    1,038.86x = 1,433.50 × 882.12
  4. Step 4: Simplify right side
    1,038.86x = 1,264,522.19
  5. Step 5: Solve for x
    x = 1,264,522.19/1,038.86
  6. Step 6: Final answer
    x = 1,217.22

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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.